- demi-
[demi- 词源字典]
- word-forming element meaning "half, half-sized, partial," early 15c., from Old French demi "half" (12c.), from Late Latin dimedius, from Latin dimidius "half, one-half," which contains the elements dis- "apart" (see dis-) + medius "middle" (see medial).[demi- etymology, demi- origin, 英语词源]