1. Not allowing air or gas to pass in or out
   - airtight, air-tight

See also: tight

• hegemonic
• hegemony
• hegira
• Heidegger
• Heidelberg man
• heifer
• heigh-ho
• height
• heighten
• heightening
• heights
• Heilong
• Heilong Jiang
• Heimdal
• Heimdall
• Heimdallr
• Heimlich maneuver
• Heimlich manoeuvre
• heinie
• Heinlein
• heinous
• heinously
• heinousness
• Heinrich Boell
• Heinrich Engelhard Steinway