microevolution

 
Pronunciation: /ˌmʌɪkrəʊiːvəˈluːʃ(ə)n, -ˈljuːʃ(ə)n, -ɛv-/

noun

[mass noun] Biology
  • evolutionary change within a species or small group of organisms, especially over a short period.

Derivatives

microevolutionary

adjective