- di- (1)
[di- 词源字典]
- word-forming element meaning "two, double, twice," from Greek di-, from dis "twice," related to duo (see two).[di- etymology, di- origin, 英语词源]
- di- (2)
- word-forming element meaning "apart, asunder," form of dis- before certain voiced consonants.
- di- (3)
- word-forming element meaning "through; thoroughly," form of dia- before vowels.