syn·chron·ic
adjective/sɪŋˈkrɒnɪk/
/sɪŋˈkrɑːnɪk/
(linguistics)- relating to the way something, especially a language, is at a particular point in time
（语言）共时的 Word Origin1920s: from late Latin synchronus (from Greek sunkhronos, from sun- ‘together’ + khronos ‘time’) + -ic.