diachronous

/D AY0 AH0 K R AH0 N AH0 S/
adjective
  1. 1

    Occurring over or changing with time.

  2. 2

    Of, pertaining to or concerned with changes that occur over time.

adjective
  1. 1

    Varying in age from place to place

Source: https://en.wiktionary.org/wiki/diachronic, https://en.wiktionary.org/wiki/diachronous