- hour meter
- hourglass
- Hughes effect
- human error
- humid chamber
- humidification effectiveness
- humidification efficiency
- humidification system
- humidified air
- humidifier valve
- humidify
- humidifying effectiveness
- humidifying efficiency
- humidity
- humidity control
- humidity controller
- humidity range
- humidity resistance
- humidity separator
- hurt
- Huygens" principle
- hybrid balance
- hybrid coil
- hybrid potentiometer
- hybrid repeater
- hybrid set
- hybrid tee
- hydration
- hydrocarbon refrigerant
- hydrodynamic shock
- hydroelectricity
- hydrogen cooled
- hydrogen electrode
- hydrography
- hydromagnetic waves
- hydrophile
- hydrophobic condition
- hydrostatic condition
- hydrostatic head
- hydroxide
- hygrometric chart
- hygroscopic property
- hyperbolic distance
- hypercardioid microphone
- hyperfine splitting
- hypergalaxy
- hypermetropic eye
- hypothermic condition
- hydrogen
- hydrogen cooling
- hydrogen Dewar
- hydrogen liquefier
- hydrogen refrigerator
- hydrogen-like
- hydrogenant
- hydrogenous
- hydrophobic
- hydroscope
- hydrostatic height
- hygroscopic moisture
- hypersonic flow
- hysteresis effect
- hysteresis loop
- ibidem
- ice
- ice adherence
- ice appearance
- ice bank
- ice bath
- ice block
- ice blockage
- ice bond
- ice bridge
- ice bunker
- ice can
- ice cavity
- ice chest
- ice chute
- ice claw
- ice coating
- ice collection
- ice condition
- ice cooling
- ice cream
- ice crystal
- ice crystallization
- ice eutectic
- ice flake
- ice formation
- ice front
- ice hoist
- ice making
- ice mix
- ice mould
- ice outlet
- ice piece
- ice planer
- ice point
- ice quantity
- ice removal