The Collaborative International Dictionary
Hemi-
Hemi- \Hem"i-\ [Gr. "hmi-. See Semi-.] A prefix signifying half.
Douglas Harper's Etymology Dictionary
Wiktionary
hemi-
pre. half.
Usage examples of "hemi-".
The glass depolarized and everyone gasped again as the rings grew brighter, bracketing the deep blue glow that outlined the northern hemi- sphere.