- synchronous (adj.)
[synchronous 词源字典]
- 1660s, "existing or happening at the same time," from Late Latin synchronus "simultaneous," from Greek synkhronos "happening at the same time," from syn- "together" (see syn-) + khronos "time" (see chrono-). Meaning "recurring at the same successive instants of time" is attested from 1670s. Related: Synchronously.[synchronous etymology, synchronous origin, 英语词源]