synchronic

existing or occurring at the same period of time <to musical accompaniment, the swimmers' synchronic movements form a kaleidoscope of artistic patterns> Synonyms coetaneous, coeval, coexistent, coexisting, coextensive, coincident, coincidental, concurrent, contemporaneous, coterminous, simultaneous, contemporary, synchronousRelated Words accompanying, attendant, attending, concomitant, incidentAntonyms asynchronous, noncontemporary, nonsimultaneous, nonsynchronous