demi-
Concise Oxford English Dictionary © 2008 Oxford University Press:
demi-/ˈdemi/
▶prefix
- 1 half: demisemiquaver.
- 2 partially; in an inferior degree: demigod.
– origin via Fr. from med. L. dimedius ‘half’, from earlier dimidius.
'demi-' also found in these Oxford entries:

