1. occurring or existing at the same time or having the same period or phase

- recovery was synchronous with therapy

- a synchronous set of clocks

- the synchronous action of a bird's wings in flight

Similar word(s): synchronic, coetaneous, coeval, contemporaneous, coexistent, coexisting, coincident, coincidental, coinciding, concurrent, cooccurring, simultaneous, contemporary, parallel, synchronic, synchronised, synchronized, synchronal, synchronous

2. concerned with phenomena (especially language) at a particular period without considering historical antecedents

- synchronic linguistics

Similar word(s): synchronal, synchronic, synchronous

3. (of taxa) occurring in the same period of geological time

Similar word(s): synchronal, synchronic, synchronous