diachronic
1. [ adjective ] (linguistics) used of the study of a phenomenon (especially language) as it changes through time
Synonyms: historical
Examples:

"diachronic linguistics"

Related terms: synchronic language
Similar spelling:   dichromatic
  dichromacy
  discern
  Dicranaceae
  Dicranum
  dichromia
  dichromat
  discerning
  Dicranales
  dichromate
  dichromasy