hier - hori
- history
- history screen
- hit
- hitch
- hitch-feed
- hitch-feed cut-off machine
- hitched
- hitching
- hive
- HL
- HLL
- HMC
- HMC cell
- HNC machine
- hob
- hob arbor column
- hob back-off machine
- hob contour measuring instrument
- hob gear
- hob lead inspection instrument
- hob sharpener
- hob slide
- hob swivel head
- hob tooth profile grinding machine
- hob-and-cutter sharpening checker
- hob-centering bracket
- hob-grinding machine
- hob-sharpening machine
- hobber
- hobbing
- hobbing cutter
- hobbing machine
- hobbing press
- hobbing time
- hobbling motion
- Hofer's weakest section
- hog
- hogging
- hogging power
- hoist
