WordReference Random House Learner's Dictionary of American English © 2014
demi- comes from French, where it has the meaning "half.'' This meaning is found in such words as: demigod, demitasse.
Collins Concise English Dictionary © HarperCollins Publishers::
Etymology: via French from Medieval Latin dīmedius, from Latin dīmīdius half, from dis- apart + medius middle
- half: demirelief
- of less than full size, status, or rank: demigod
'demi-' also found in these entries:
In the English description: