C&F (Cost and Freight)

C4 Plant

Cabinet of the United States

Cable

Cable Routing Schedule

Cable Schedule

Cable Tile

Cable Tray Penetration Detail

Cable Trench Detail

Cable Trench Layout

CAD (Computer-Aided Design)

CAD/CAM (Computer-Aided Design/Computer-Aided Manufacturing)

Cadence

Cadmium (Cd)

Cadmium Telluride (CdTe) Solar Cell

Caesium or Cesium (Cs)

Caffeine

CAFM (Computer-Aided Facility Management)

Cage

Calandria

Calcareous Coating or Calcareous Deposit

Calcium (Ca)

Calcium Carbonate (CaCO3)

Calcium Dihydrogen Phosphate

Calculate

Calculation

Calendar

Calendar Adjustment

Calibrate

Californium (Cf)

Call Back

Call Money

Calling Party Pays (CPP)

Calorie (cal)

Calorific Value (CV)

Calorimeter

CAM (Computer-Aided Manufacturing)

Camp

Canal

Cancer

Candela

Candidate

Candle Power

Canned Motor Pump

Cannibalisation

CAPA (Corrective Action and Preventive Action)

Capability

Capability Assessment

Capability Margin

Capacitance (C)

Capacitive Deionization (CDI)

Capacitor

Capacity

Capacity Assessment

Capacity Charge (or Demand Charge)

Capacity Development

Capacity Factor

Capacity Factored Estimate (Class 5)

Capacity Trading

CAPEX (Capital Expenditure)

Capillary Action

Capillary Number

Capital

Capital Account

Capital Asset Pricing Model (CAPM)

Capital Budgeting

Capital Cost

Capital Injection

Capital Levy

Capital Reserve

Capital Spare

Capital Transfer

Capitalisation

Capitalisation of Interest

Capitalised Production

Capitulation

Captive Electrolyte Battery

Captive Refinery Oxygenate Plant

Capture

Car Seal

Caravan

Carbamate (NH2COOH)

Carbamide (CO(NH2)2)

Carbon (C)

Carbon Black

Carbon Border Tax

Carbon Capture and Storage (CCS)

Carbon Capture, Utilisation and Storage (CCUS)

Carbon Credit

Carbon Dioxide (CO2)

Carbon Dioxide (CO2) Equivalent (CO2e)

Carbon Dioxide Removal (CDR, or Carbon Removal)

Carbon Footprint

Carbon Mono Oxide (CO)

Carbon Negativity

Carbon Neutrality

Carbon Steel

Carbon Trading

Carbon Zinc Cell Battery

Carbonaceous

Carbonate 

Carbonyl (C=O)

Carboxyl Group (-COOH)

Carburizing

Carcinogen

Career

Cargo

Cargo Retention Clauses (CRT)

Cargo Ship

Carnet or ATA Carnet

Carnot Cycle

Carriageway

Carry

Carry Forward

Carry Over

Cartel

Cascade Impactor

Cascading Style Sheets (CSS)

Case

CASE (Computer Aided Software Engineering)

Case Conference

Case Hardening

Casein Paint

Cash

Cash and Carry

Cash Cost

Cash Flow

Cash Flow Forecasting

Cash Flow Management

Cash in Advance

Cash on Delivery (COD)

Cash Transfer

Casing Valve

Cast Iron

Casting

Casual

Casual Worker

Catalogue

Catalysis

Catalyst

Catalyst Activity (z)

Catalyst and Chemicals Summary

Catalyst Coke

Catalytic Converter

Catalytic Cracking

Catalytic Hydrocracking

Catalytic Hydrotreating

Catalytic Reforming

Catastrophe

Catastrophic Failure

Catastrophic Incident

Catastrophic Loss

Catch Basin

Catch Tank

Category

Category D Fluid Service

Category M Fluid Service

Cathode

Cathodic

Cathodic Corrosion

Cathodic Disbondment

Cathodic Inhibitor

Cathodic Polarization

Cathodic Protection

Catholyte

Cation

Caulking Compound

Causal Factor (CF)

Cause

Cause and Effect (C&E) Diagram

Cause Consequence Analysis (or Cause Consequence Diagrams)

Cause of Loss

Causes of Death

Caustic

Caustic Cracking

Caustic Embrittlement

Caustic Environment

Caveat

Cavitation

Cavitation Corrosion

Cavitation Damage

Cavitation Erosion

Cavity Wall Insulation

CBE (Commercial Bid Evaluation)

CBI (Condition Based Inspection)

CBOT (Chicago Board of Trade)

CBS (Cost Breakdown Structure)

CCC (Care, Custody, and Control)

CCO (Chief Customer Officer)

CCPS (Centre for Chemical Process Safety)

CD (Certificate of Deposit)

CDC (Centres for Disease Control and Prevention)

CDO (Chief Diversity Officer)

Ceiling

Celebrate

Cell

Cell Barrier

Cell Junction

Cell Membrane

Cell Nucleus

Cell Receptor

Cellulose

Cellulose Insulation

Celsiu (°C)

Cement

Cementation

Cementite (Fe3C)

Census

Centigrade

Central Bank

Central Bank Digital Currency (CBDC)

Central Government

Central Heating System

Central Power Plant

Central Receiver

Central Receiver Solar Power Plant

Central Tendency

Centralisation (Centralization)

Centraliser (Centralizer)

Centrifugal Compressor

Centrifugal Pump

Centrifuge

Ceramic

Cerium (Ce)

Certain

Certificate

Certificate of Compliance (COC)

Certificate of Insurance

Certificate of Origin

Certification

Certification System

CES (Consumer Electronics Show)

Cetane

Cetane Number (CN)

cf (Cubic Feet), Mcf

CFC (Chlorofluorocarbon)

CGIAR (formerly the Consultative Group for International Agricultural Research)

CGPM (General Conference on Weights and Measures)

CGS (Centimetre, Gram and Second) Unit

Chain

Chain (Length)

Chain Index

Chain Linking

Chain of Title

Chain Price Index

Chain Reaction

Chalcogen

Chalking

Challenge

Chamber

Champion

Change

Change Control

Change in Scope

Change Management

Change Management Procedure

Change Order (CO)

Change Work

Chaos

Char

Character

Characteristic

Characteristicity

Charcoal

Charge

Charge Capacity

Charge Carrier

Charge Controller

Charge Density

Charge Factor

Charge Neutralizer

Charge Rate

Charge Relaxation

Chargeable Weight

Charity

Charles's Law 

Charter

Chasm

Chatbot

ChatGPT

Check

Check Estimate

Check Valve

Checking

Checking Rule

Checklist Analysis

Checklist or Check Sheet

Checksum

Chelate 

Chemical

Chemical Activity Barometer (CAB)

Chemical Change 

Chemical Conversion Coating

Chemical Element

Chemical Energy

Chemical Engineering

Chemical Equation

Chemical Equilibrium

Chemical Explosion

Chemical Formula 

Chemical Industry

Chemical Isolation

Chemical Kinetics

Chemical Plant

Chemical Potential Energy

Chemical Process

Chemical Process Industry

Chemical Process Quantitative Risk Analysis (CPQRA)

Chemical Process Quantitative Risk Assessment (CPQRA or QRA)

Chemical Property

Chemical Reaction

Chemical Reactivity

Chemical Reactivity Hazard

Chemical Structure

Chemical Symbol 

Chemical Treatment (of hazardous waste)

Chemical Vapor Deposition (CVD)

Chemistry

CHEMTREC (Chemical Transportation Emergency Center)

Chevron Pattern

Chiller

Chimney

Chimney Effect

Chipping

Chiral Centre

Chirality (or Chiral)

Chloramine

Chlorate (ClO3-)

Chloride (Cl-)

Chlorinated Hydrocarbon

Chlorine (Cl)

Chlorine Dioxide (ClO2)

Chlorite (ClO-)

Chloroform (CHCl3)

Chlorophyll

Chlorpyrifos

Choice of Law

Choke

Choke Valve

Cholelithiasis

Cholera

Cholesterol

Chopper Pump

Chord

CHP (Combined Heat and Power Plant)

Christmas Day

Christmas Eve

Christmas Tree

Chromatography 

Chromium (Cr)

Chromosome

Chronic

Chronic Dehydration

Chronic Disease

Chronic Effect

Chronic Hazard

Chronic Health Condition

Chronology

Churning

Chuseok (or Hangawi as a Korean Thanksgiving)

CID (Capital Investment Decision)

CIF (Cost, Insurance, and Freight)

CII (Construction Industry Institute)

CIM (The Chartered Institute of Marketing)

CIPM (International Committee for Weights and Measures)

CIPS (Chartered Institute of Procurement and Supply)

Circuit

Circuit Breaker

Circuit Breaker Setting

Circuit Lag

Circularity

Circulate

Circulating Fluidized Bed

Circulation Pump

Circulation System

Circulatory System

Circumstance

Circumvent

Circumvention

Cis Isomer

Citizen

Citizenship

City Gas (or Town Gas)

Civil

Civil Contingencies Act (CCA)

Civil Design Criteria

Civil Case

Civil Engineering

Civil Layout

Civil Register

Claim

Claimant

Clarification

Clarifier

Clarify

Clash

Class

Classification

Clathrate

Clause

Clawback

Clay

Clean Air Act (CAA)

Clean Development Mechanism (CDM)

Clean Energy

Clean Hands Doctrine

Clean on Board

Clean Power Generator

Clean Power Plan

Clean Production

Clean Technology

Clean Water Act (CWA)

Cleaning

Cleanroom

Cleavage Fracture

Clickthru Agreement

Client

Client Assessment for the proposal

Client Confidentiality

Client Furnished Material

Client Relationship (Customer Relationship)

Client Relationship Management (CRM or Customer Relationship Management)

Client Satisfaction

Client Satisfaction Survey

Climate

Climate Change

Climate Change, Agriculture and Food Security (CCAFS)

Climate Prediction (or Climate Forecast)

Climate Prediction Center's (CPC)

Climate System

Clinical Trial

Clog

Clone

Closed Cycle

Closed Ecological System

Closed Loop Control System

Closed Loop Geothermal Heat Pump System

Closed Network

Closed System

Cloud

Cloud Computing

Cloud Point

CLSCC (Chloride Stress Corrosion Cracking)

Cluster

Cluster Analysis

cm (Cubic Metre, M3), Mcm, Bcm

CME (Chicago Mercantile Exchange)

CMMS (Computerised Maintenance Management Systems)

CNC (Computer Numerical Control)

CNG (Compressed Natural Gas)

Coagulation

Coagulation and Flocculation

Coal

Coal Bed Methane (CBM)

Coal Deposit

Coal Gas

Coal Mine Methane (CMM)

Coal Seam Gas

Coal Tar

Coalesce

Coalification

Coarsen

Coat

Coating

Coating System

Cobalt (Co)

COBOL (Common Business Oriented Language)

Cobweb Theory (or Cobweb Model)

Cocaine

COD (chemical oxygen demand)

Code

Codex

Codex Alimentarius

Coding

Coefficient

Coefficient of Heat Transmission (U-Value)

Coefficient of Performance (COP)

Coenzyme 

COF (Consequence of Failure)

Co-financing

Co-firing

COG (Centre of Gravity)

Cogeneration

Cogenerator

Cognitive

Cognitive Computing

Coherence

Coherent

Cohesion 

Cohort

Cohort Study

COI (Confirmation of Intent)

Coil

Coincidence Factor

Coincident Demand

Coke

Coke Oven Gas

Coker

Coking Coal

Cold Chain

Cold Cracking

Cold Heavy Oil Production with Sand (CHOPS)

Cold Insulation

Cold Lap

Cold Shut

Cold Working

Collaborate

Collaborative Economy

Collagen

Collateralised Debt Obligation (CDO)

Collect

Collective Agreement

Collector

Collector Fluid

Colligative Properties 

Collimator

Collision

Colloid 

Collusion

Colorectal

Colour (Color)

Colour Rendition

Colour Rendition (Rendering) Index (CRI)

Colour Temperature

Column

Comanagement (Co-Management)

Combination

Combination Reaction 

Combine

Combined Charging System (CCS)

Combined Collector

Combined Cooling, Heat and Power (CCHP)

Combined Cycle Gas Turbine (CCGT)

Combined Cycle Power Plant (CCPP)

Combined Gas Law

Combined Heat and Power Fuel Cell (CHPFC)

Combustible

Combustible Concentration

Combustible Dust

Combustible Liquid

Combustible Particulate Solid

Combustion

Combustion Air

Combustion Chamber

Combustion Gas

Combustion Power Plant

Combustion Turbine

COMEX

Comfort Letter

Commemorate

Comment

Commercial

Commercial Baseline

Commercial Blast Cleaned Surface

Commercial Building

Commercial Confidentiality

Commercial Credit

Commercial Device

Commercial Paper (CP)

Commercial Power

Commercial Risk

Commercial Sector

Commission

Commissioning

Commissioning Authority

Commissioning Completion Certification

Commissioning Plan

Commissioning Process

Commissioning Process Activity

Commissioning Process Progress Report

Commissioning Report

Commissioning Sequence

Commissioning Team

Commit

Commitment

Committee

Commoditisation (or Commoditization)

Commodity

Commodity Data

Commodity Material

Common

Common Carrier

Common Cause Failure (CCF)

Common Cause of Variation

Common Gateway Interface (CGI)

Common Law

Common Market

Common Offset

Common Sense

Common-ion Effect 

Commonwealth

Commonwealth of Independent States (CIS)

Communication

Communication and Coordination Management

Communist

Communitization

Community

Compact

Compaction

Companion

Company

Company Capability Assessment

Company Confidential Information

Company Seal

Comparability

Compare

Compartment

Compatibility

Compensate

Competence

Competency

Competent

Competent Authority

Competition

Competitive Service

Competitor Assessment for the proposal

Complaint

Complete

Complete Market

Complete Mix Digester

Completeness

Completion

Completion Process

Completion Report

Complex Ion

Complexity

Compliance

Compliance Criterion

Component

Compose

Composite Indicator

Composition

Compound

Compound Annual Growth Rate (CAGR)

Comprehensive

Comprehensive Economic Trade Agreement (CETA)

Comprehensive Nuclear-Test-Ban Treaty (CTBT)

Compress

Compressed Air Storage

Compressibility

Compressible

Compression Chiller

Compressive Strength

Compressor

Compressor Station (or Gas Booster Station)

Comprise

Compromise

Compulsory

Computation

Computer

Computer Engineering

Computer Science

Computer Software

Conceal

Concentrated

Concentrated PV (CPV)

Concentrated Solar Power (CSP)

Concentrating (Solar) Collector

Concentration

Concentration Cell

Concentration Polarization

Concentrator

Concentric

Concept

Conceptual Design

Concession

Concise

Conclusion

Concorde Effect

Concrete

Concrete Pump

Concurrent Sentence

Condensate

Condensation

Condensation Induced Water Hammer

Condensation Reaction 

Condenser

Condenser Coil

Condensing Boiler

Condensing Furnace

Condensing Unit

Condition

Condition Monitoring (CM)

Conditional Bond

Conditional Discharge

Conditional Exclusion

Conditional Probability

Conditional Sentence

Conditioning Effect

Conduct

Conduct of Operations (COO)

Conductance

Conduction

Conductive

Conductive Coating

Conductive Concrete

Conductivity

Conductor

Conduit

Conference

Confidence Interval

Confidence Level

Confidential

Confidential Agreement (or Confidentiality Agreement)

Confidential Data

Confidentiality

Confidentiality Disclosure Agreement

Configuration

Configuration Management

Configure

Confined Explosion

Confinement

Confirm

Confirmed Letter of Credit (L/C)

Conflict

Conflict of Interest (COI)

Conflict Rule

Conform

Conformer 

Conformity

Confrontation

Congener

Congestion

Conglomerate

Conjoint

Conjoint Analysis Approach

Conjugate 

Conjunctivitis

Connate Water

Connect

Connected Load

Connossement

Conscious

Conscious Parallelism

Consecutive Sentence

Consensus

Consensus ad idem

Consent

Consequence

Consequence Analysis

Consequence Based Approach

Consequence Modelling

Conservation

Conservation of Energy 

Conservation of Mass 

Conservation Vent Valve

Consideration

Consign

Consignee

Consignment

Consignor

Consist in

Consist of

Consistency

Consistency in Aggregation

Consistent

Consolidate

Consolidated Amount

Consolidation

Consortium

Consortium Bank

Conspiracy

Constant

Constant Price

Constant-Speed Wind Turbine

Constituent

Constitute

Constitutional Monarchy

Constraint

Constructability

Construction

Construction All Risk (CAR) Insurance

Construction Allowance

Construction Boxscore Database

Construction Checklist

Construction Completion Management Tool

Construction Contractor

Construction Cost

Construction Detailed Schedule (Level 4)

Construction Document

Construction Engineering

Construction Equipment

Construction Foreman

Construction Indicator

Construction Labour

Construction Management

Construction Manager

Construction Material

Construction Organisation (Site Organization)

Construction Price Index

Construction Progress

Construction Sequence

Construction Team Mobilisation

Construction Work Completed

Construction Work Package (CWP)

Construction, Design and Management Regulations (CDM)

Consult

Consultant

Consumable Material

Consume

Consumer

Consumer Durable

Consumer Goods

Consumers' Surplus

Consumption

Contact

Contact Resistance

Contagion

Contagious Disease

Contain

Container

Containment

Containment Strategy

Contaminant

Contamination

Content

Contest

Contestable Market

Context

Contingency

Contingency Drawdown

Contingency Fund or Reserve

Contingency Plan

Contingency Reserve

Contingent Liability

Contingent Valuation

Continual Improvement

Continuity

Continuity Bond

Continuous

Continuous Anode

Continuous Commissioning Process

Continuous Quality Improvement (CQI)

Continuous Reactor

Continuous Stirred Tank Reactor (CSTR)

Contour

Contour Map

Contract

Contract Award

Contract Basis for the Baseline (Contract Summary)

Contract Budget Base (CBB)

Contract Development and Manufacturing Organisation (CDMO)

Contract Document

Contract for Difference (CFD) 

Contract Management

Contract Price

Contract Scope of Work (SOW)

Contract Type

Contraction

Contractor

Contractor Management

Contrast

Contravention

Contribute

Contributing Cause

Contribution

Control

Control Base

Control Budget

Control Budget Estimate (Class 2)

Control Chart

Control Drawing

Control Level Schedule (Level 3 Schedule)

Control Logic Diagram

Control Objectives for Information and Related Technology (COBIT)

Control of Industrial Major Accident Hazards Regulations (CIMAH)

Control of Major Accident Hazards (COMAH)

Control Rod

Control Room

Control Room and Control Building Layout

Control System

Control System Engineering

Control Valve

Controlled Document

Controlled Variable 

Convection

Convention

Conventional Gasoline

Conventional Heat Pump

Conventional Oil

Conventional Power

Conventional Reservoirs

Conventional Rounding

Converge

Conversation

Conversion

Conversion Efficiency

Conversion Factor 

Converter

Convertible Bond

Convexity

Conveyance

Conveyance Loss

Conviction

COO/CD (Conduct of Operations and Operational Discipline)

Cookie

Cool

Cool Flame Ignition

Coolant

Cooling

Cooling Capacity

Cooling Load

Cooling Water

Cooling Water System

Cooperation

Cooperative (Co-operative)

Coordinate

Coordinate Bond 

Coordination

Coordination Compound

Coordination Drawing (or Composite Drawing)

COP24

Copernicium (Cn)

Co-polymer (Co-polymer)

Copper (Cu)

Copper Indium Gallium Selenide (CIS/CIGS) Solar Cell

COPQ (Cost of Poor Quality)

Coproduct

Copy

Copyright

Coram

Core

Core Commodity

Core Competence

Core Value

Corner Post

Corona Discharge

Corporate

Corporate Cost

Corporate Entity

Corporate Governance

Corporate Trustee

Corporation

Corps

Correction

Corrective Action

Corrective Maintenance

Correlation

Correlation Coefficient

Correspondent Bank

Corrosion

Corrosion Coupon

Corrosion Fatigue

Corrosion Inhibitor

Corrosion Potential

Corrosion Rate

Corrosion Resistance

Corrosion Risk Assessment

Corrosive

Corrosive Environment

Corrosiveness

Corrosivity

Corrupt

Corruption

Cosmetic

Cosmic Radiation

Cosmos

Cosolvent

Cost

Cost Avoidance

Cost Based Pricing Technique

Cost Benefit Analysis

Cost Billed

Cost Centre (Cost Center)

Cost Control and Management

Cost Engineer

Cost Estimate

Cost Estimate Classification

Cost Estimator

Cost Gas

Cost Index (or Price Index)

Cost of Cash

Cost of Crude Oil

Cost of Living Index

Cost of Service (RCS)

Cost Performance Index (CPI)

Cost Plus Award Fee (CPAF) Contract

Cost Plus Fee Contract

Cost Plus Fixed Fee (CPFF) Contract

Cost plus Fixed Fee (CPFF) with sharing Savings

Cost Plus Incentive Fee (CPIF) Contract

Cost Plus Percentage of Cost Contract

Cost Plus with Guaranteed Maximum Price (GMP) and Incentive Contract

Cost Plus with Guaranteed Maximum Price (GMP) Contract

Cost Variation (CV)

Costs

Coulomb (C)

Coulomb's Law

Counsel

Counterfeit

Counterflow Heat Exchanger

Countermeasure

Counterpart

Counterparty

Counterpoise

Countervail

Country

Country of Origin (COO)

Country of Origin Labelling (CoOL)

Couple

Coupling

Coupon

Course

Court

Covalent Bond

Covalent Compound 

Covalent Radius

Covenant

Cover

COVID-19 (Coronavirus Disease 2019)

CPI (Characters per Inch)

CPI (Consumer Price Index)

CPI (Corrugated Plate Interceptor)

CPM (Critical Path Method)

CPU (Central Processing Unit)

Crack

Cracking

Craft

Craftsman

Crashing

Crawl Space

Crazing

Creaming

Create

Creation

Creative Accounting

Credit

Credit Default Swap (CDS)

Credit Derivative

Credit Guarantee

Credit Insurance

Credit Risk

Creditor

Creep

Creep Strength

Crenation

Crest

Crevice Corrosion

Crew

Criteria

Criterion

Critical

Critical Activity

Critical Alarm

Critical Capital

Critical Compression Pressure

Critical Effect

Critical Equipment

Critical Humidity

Critical Infrastructure

Critical Load

Critical Raw Materials Alliance (CRMA)

Critical Operating Parameter

Critical Path

Critical Pitting Potential

Critical Point

Critical Pressure

Critical Process Measurement

Critical Protection Circuit

Critical Protection Device

Critical Protection Instrumentation

Critical Temperature

Criticality

Criticality Study

CRO (Contract Research Organization)

Cross Section

Cross Subsidization

Cross Trade

Crowd

Crowd Economy

Crowdfunding

Crowdsourcing

Crude

Crude Distillation Unit (CDU)

Crude Oil Production

Crude Oil Quality

Cruise

Crust

Cryogenic Liquid

Cryogenic Pump

Cryogenics

Cryosphere

Cryptocurrency

Cryptography or Cryptology

Crystal (Crystalline)

Crystalline Silicon (c-Si)

Crystallization (Crystallization)

Crystallise (Crystallize)

CSA (Civil, Structural and Architectural)

CSI (Control System and Instrumentation)

CSR (Corporate Social Responsibility)

CSST (Critical Steady State Temperature)

CSTR (Continuous flow Stirred Tank Reactor)

CTD (Cumulative Trauma Disorder)

Cubic

Cubic Feet per Second (CFS)

Cubic Foot (of Natural Gas)

Cultivate

Cultural Diversity

Culture

Cure

Curie (Ci)

Curing

Curing Agent

Curing Time

Curium (Cm)

Currency

Currency Adjustment Factor (CAF)

Currency and Deposit

Currency Fluctuation

Currency linked Bonds or Notes

Currency of Transaction

Currency Surcharge

Current (I)

Current Account

Current Density (J)

Current Dollars (or Constant Dollars)

Current Efficiency

Current Forecast

Current Price

Current Transfer

Current Value

Current Withstand Rating

Custom

Customer (or Consumer)

Customer Contact Centre (CCC)

Customer Satisfaction

Customs Clearance

Customs Duty

Cut

Cut off (or Cutoff)

Cut off Threshold

Cut off Voltage

Cutter Stock

Cutting Waste

CV (Curriculum Vitae)

CVID (Complete, Verifiable and Irreversible Dismantlement)

Cyber

Cyber Attack (or Cyberattack)

Cyber Monday

Cyber Money

Cycle

Cycle Time

Cyclic Compound (or Ring Compound)

Cyclic Steam Stimulation (CSS)

Cycloalkane

Cyclone

Cyclone Burner

Cylinder

Cyst

Cytokine