grou - high
- heads-up display system
- headset
- headspace
- headspace volume
- headstock
- headstock center
- headtree
- headwall face
- headwater elevation
- headwater level
- headwater tributary
- headway
- headwheel speed
- headwind
- headworks
- heald machine
- healing
- healing of defects
- health
- health and safety engineer
- health control
- health hazard
- health monitoring
- health physics
- health [medical] officer
- health-monitoring instrument
- healthy environment
- healthy phase
- heap
- heap leaching
- heap loading
- heap manager
- heap roasting
- heap sand
- heaped capacity
- hearing
- hearing aid
- hearing distance
- hearing glove
- hearing protection device