| Adj. | 1. | synchronic - occurring or existing at the same time or having the same period or phase; "recovery was synchronous with therapy"- Jour.A.M.A.; "a synchronous set of clocks"; "the synchronous action of a bird's wings in flight"; "synchronous oscillations" Synonyms: synchronal, synchronous |
| 2. | synchronic - concerned with phenomena (especially language) at a particular period without considering historical antecedents; "synchronic linguistics"; "descriptive linguistics" Synonyms: descriptive Antonyms: diachronic, historical - used of the study of a phenomenon (especially language) as it changes through time; "diachronic linguistics" | |
| 3. | synchronic - (of taxa) occurring in the same period of geological time |