se·lec·tion·ist (sĭ-lěk'shə-nĭst) adj.
also se·lec·tion·al (-shə-nəl) Of or relating to the view that evolution or genetic variation occurs chiefly as a result of natural selection. n. One who holds or favors a selectionist view. se·lec'tion·ism n.
Main Entry: se·lec·tion·ist Pronunciation: s&-'lek-sh(&-)n&st Function: noun : a person who considers natural selection afundamental factor in evolution