- hose reel
- hot air
- hot area
- hot cure
- hot jacket
- hot reflux
- hot shortness
- hot spot
- hot tarring
- hot tinning
- hot zone
- hot-galvanized
- hot-short
- Hotchkiss drive
- hotel platform
- Houdry hydrocracking
- hourly average
- house coal
- house paint
- howlite
- hudantoic acid
- hugenite
- hullite
- humic
- hummock
- humogelite
- humosite
- hussakite
- hyaline quartz
- hydracrylic
- hydrargyrum
- hydrate
- hydration
- hydration ratio
- hydration water
- hydraulic binder
- hydraulic coupling
- hydraulic drilling
- hydraulic drive
- hydraulic excavator
- hydraulic fill
- hydraulic hose
- hydraulic injection
- hydraulic test
- hydraulic transmission
- hydriodic
- hydro-solvent
- hydroaromatic
- hydrobromic
- hydrocarbon agent
- hydrocarbon black
- hydrocarbon feedstock
- hydrocarbon trap
- hydrocarbonate
- hydrocellulose
- hydrochloric acid
- hydrocinnamic
- hydroclone
- hydrocortisone
- hydrocracker
- hydrocyanic
- hydrodesulfurization
- hydroforming
- hydrogen bond
- hydrogen gas
- hydrogen sulfide
- hydrogenate
- hydrogenated
- hydrogenation
- hydrogenerated oil
- hydrographic
- hydrographic chart
- hydrographic map
- hydrographic survey
- hydrologic process
- hydromuscovite
- hydrophobic colloid
- hydropolymer
- hydropropanamide
- hydrosol
- hydrostatic press
- hydrotalcite
- hydrothermal fillings
- hydrotreating
- hydrous silicate
- hydroxonium ion
- hydroxydimethylbenzene
- hydroxyl value
- hygrometry
- hypereutectoid steel
- hypersorption column
- hypochloruos acid
- hypogenetic
- hypotaxic deposit
- hypothetic reserves
- hydraulic seal
- hydraulically operated
- hydrobilirubin
- hydrobocacite
- hydrocarbon