evolution evolution /ˌiːvəˈluːʃən, ˌɛvoʊˈluːʃən, ˌiːvoʊˈluːʃən/

noun

1. () A process in which something passes by degrees to a different stage (especially a more advanced or mature stage)  ( evolution , development )
   a process in which something passes by degrees to a different stage (especially a more advanced or mature stage)
    The development of his ideas took many years
   the development of his ideas took many years
    The evolution of Greek civilization
   the evolution of Greek civilization
    The slow development of her skill as a writer
   the slow development of her skill as a writer
   
2. (biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms  ( evolution , organic evolution , phylogenesis , phylogeny )
   (biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms