Haber Process
Habitable
Habitat
Hackathon
Haemolytic Uremic Syndrome
Hafnium (Hf)
Half Cell
Half Cell Potential
Half-life
Half-life, Biological (Tb)
Half-life, Effective (teff)
Half-life, Physical (Radiological) (Tr)
Half-Value Layer
Halide
Halide Ion
Halite
Halogen
Halogenated Hydrocarbon
Halogenation
Hammock Activity
Hand Over (or Turnover)
Hand, Foot, and Mouth Disease (HFMD, or FMD (Foot and Mouth Disease))
Handicap
Happy
Harbour (Harbor)
Hard
Hard Coal
Hard Fork (or Soft Fork)
Hard Water
Hard Wired Interlock
Hardness
Hardship Allowance
Hardware
Harm
Harmonic
Harmonic Content
Harmonisation
Harmonised System (HS)
Hassium (Hs)
Hatch
Hazard
Hazard Analysis
Hazard Analysis and Critical Control Point(s) (HACCP)
Hazard Checklist
Hazard Classification
Hazard Communication Standard (HCS)
Hazard Evaluation
Hazard Frequency of Potential Hazards
Hazard Identification and Risk Analysis (HIRA)
Hazard Rate
Hazard Zone
Hazardous
Hazardous Air Pollutant
Hazardous Area Classification
Hazardous Area Classification Drawing
Hazardous Chemical
Hazardous Chemical Reactivity
Hazardous Energy Control Procedure
Hazardous Material
Hazardous Substance
Hazardous Waste
Hazardous Waste Treatment
HAZID (Hazard Identification)
HAZOP (Hazardous Operability)
HAZOP Report
HAZOP/ LOPA Study
HDL (High Density Lipoprotein)
Head
Head Count
Headage Payment
Heads of Agreement (HOA)
Headwater
Health
Health & Human Services (HHS)
Health Expectancy
Health Hazard
Health Hazard Band (HHB)
Health Physics
Health Related Quality of Life (HRQOL)
Healthy Diet
Heat (Q or q)
Heat Absorbing Window Glass
Heat Affected Zone
Heat and Material Balance (H&MB)
Heat Capacity
Heat Content
Heat Dome
Heat Energy (or Thermal Energy)
Heat Engine
Heat Exchanger
Heat Gain
Heat Index (HI)
Heat Loss
Heat of Reaction
Heat Pipe
Heat Pump
Heat Pump Water Heater
Heat Rate
Heat Recovery Ventilator
Heat Register
Heat Shock Proteins (HSPs)
Heat Sink
Heat Source
Heat Storage
Heat Storage Capacity
Heat Stress
Heat Stress Index
Heat Tracing
Heat Tracing Calculation
Heat Tracing Panel Schedule
Heat Tracing/Jacketing Specification and Schedule
Heat Transfer
Heat Transfer Equipment
Heat Transfer Fluid
Heat Transmission Coefficient (or Heat Transfer Coefficient)
Heat Treatment
Heater
Heating Capacity
Heating Fuel Oil
Heating Seasonal Performance Factor (HSPF)
Heating Value
Heating, Ventilation, and Air-Conditioning (HVAC) System
Heatwave
Heavy Crude Oil
Heavy Fuel Oil (HFO)
Heavy Gas Oil (HGO)
Heavy Metal
Heavy Water (or Deuterium Oxide, D2O)
Hectare (Ha)
Hedge
Hedge Fund
Hedging
Hedonic Method
Heel LNG
Height
Heisenberg Uncertainty Principle
HELE (High Efficiency, Low Emissions)
Helio
Heliochemical Process
Heliodon
Heliostat
Heliothermal
Heliothermometer
Heliotropic
Helium (He)
Helix, Helical
Henderson-Hasselbalch Equation
Henry (H)
Henry Hub
Henry's Law
Hepatitis
Herbicide
Heredity
Herfindahl Index
Hermetic
Hermetically Seal
Heroin
Hertz (Hz)
Hess's Law
Heterocyclic Chemistry
Heterocyclic Compound
Heterogeneous
Heterogeneous Mixture
Heterogeneous reaction
Heterojunction
Hexagon PPM
Hexane (C6H14)
HIC (Hydrogen Induced Cracking)
Hidden Failure
Hierarchy
High Integrity System
High Intensity Discharge Lamp
High Low Graph
High Potential Incident
High Pressure Fluid Service
High Radiation Area
High Sulphur Fuel Oil (HSFO)
High Temperature Hydrogen Attack
Higher Calorific Value (HCV)
Higher Heating Value (HHV)
Highly Hazardous Chemical
Hire
Hire Purchase
Histogram
Historic Monument
Historical Data
Historical Error
Historical Price
Historical Volatility
History Matching
HIV (Human Immunodeficiency Virus)
HMI (Human Machine Interface)
Hobby
Hogshead
Hold
Hold Point
Holding Company
Holding Corporation
Holding Gain
Holdup
Hole
Holiday
Holiday Detection
Holiday Test
Holmium (Ho)
Hologram
Home Energy Rating Systems (HERS)
Home Office Construction Management
Home Office Cost
Home Page or Start Page
Homeostasis
Homogeneity
Homogeneous
Homogenizer
Homogenous Product
Homojunction
Homopolymer
Hope
Hopper
Horizontal
Horizontal Axis Wind Turbine
Horizontal Drilling
Horizontal Merger
Horizontal Split Case Pump
Hormone
Horsepower Hour (HPh)
Horst
Host Cell
Host Factor
Hot Air Furnace
Hot Corrosion
Hot Work
Hot Work Permit
Hot-dip Galvanising
HOU (Heavy Oil Upgrading) Process
Household
Housekeeping
HP (Horsepower)
HQ (Headquarter)
HS Code (Harmonised Commodity Description and Coding System)
HSE (Health, Safety and Environment)
HSE (Health, Safety and Environment) Management
HSE (Health, Safety and Environment) Management System
HSE (Health, Safety and Environment) Plan
HSE (Health, Safety and Environment) Policy
HSE Management
HSE Management System
HSE Plan
HSE Policy
HSE Risk Interval
HSEIA (Health, Safety and Environmental Impact Assessment)
HSSE (Health, Safety, Security and Environment)
Hub
Hubbert Curve
Huff and Puff
Hull
Human
Human Being
Human Capital
Human Development
Human Engineering or Human Factored Engineering
Human Error
Human Error Probability
Human Factor
Human Genome Project (HGP)
Human Health
Human Made Disaster (or Technological Man Made Disaster)
Human Performance Technology (HPT)
Human Reliability Analysis (HRA)
Human Resource (HR)
Human Resource Management (HRM)
Human Rights Universal
Human Settlement
Human Society
Humanitarian Assistance
Humankind
Humanoid
Humidifier
Humidity
Hurricane
HVAC (Heating, Ventilating, and Air Conditioning)
HVGO (Heavy Vacuum Gas Oil)
Hybrid
Hybrid Defined Benefit (DB) Plan
Hybrid Electric Vehicle (HEV)
Hybrid Mixture
Hybrid Orbital
Hybrid Organisation
Hybrid System
Hybrid Vehicle
Hydrate
Hydration
Hydration Reaction
Hydraulic Calculation
Hydraulic Diameter
Hydraulic Flame Arrester
Hydraulic Fracturing (Fracking)
Hydraulics
Hydril
Hydrocarbon
Hydrochloric Acid (H2O:HCl)
Hydrochloro-Fluorocarbons (HCFCs)
Hydrocracking (Hydrocracker)
Hydrocyclone
Hydrodynamic
Hydroelectric Power Plant
Hydroelectricity
Hydrofluoric Acid (HF)
Hydrogen (H)
Hydrogen Fuel Cell
Hydrogen Blistering
Hydrogen Bond
Hydrogen Chloride (HCl)
Hydrogen Embrittlement
Hydrogen Fluoride (HF)
Hydrogen Ion Activity
Hydrogen Overvoltage
Hydrogen Polyoxide (H2O2, H2O3, H2O4)
Hydrogen Power Plant
Hydrogen Storage
Hydrogen Stress Cracking
Hydrogen Sulphide (H2S)
Hydrogenated Amorphous Silicon
Hydrogenated Fat
Hydrogenation
Hydrologic Cycle
Hydrology
Hydrolysis
Hydrometer
Hydronic Heating System
Hydronium Ion (H3O+)
Hydrophobic
Hydroponics
Hydropower (or Hydroelectric Power)
Hydropower (or Hydroelectric Power) Capacity
Hydrosphere
Hydrostatic Test
Hydrostatic Test Diagram
Hydrostatic Test Package
Hydrostatic Test Pressure
Hydrothermal
Hydrothermal Fluid
Hydrotreating
Hydroxide (OH-)
Hydroxy Group
Hydroxyl Group (or Hydroxy Group)
Hydroxyl Number (or Value)
Hygiene
Hygroscopic
Hype Cycle
Hyper Inflation
Hyperfine
Hypergolic Behaviour
HyperText Markup Language (HTML)
Hypertonic
Hypolimnion
Hypothesis
Hypothetical
