n. (pl. -ies) 1 a a line of descent traced continuously from an ancestor. b an account or exposition of this. 2 the study and investigation of lines of descent. 3 a plant's or animal's line of development from earlier forms. genealogist n. genealogize v.tr. & intr. (also -ise).
[ ME f. OF genealogie f. LL genealogia f. Gk genealogia f. genea race ]