/ Dictionary / Index A anagenesis: Meaning and Definition of Find definitions for: an•a•gen•e•sis Pronunciation: (an"u-jen'u-sis), [key] — n. the progressive evolution of a species. Cf. catagenesis. the regeneration of tissue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. anaesthetize anaglyph Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language