/ Dictionary / Index A anthesis: Meaning and Definition of Find definitions for: an•the•sis Pronunciation: (an-thē'sis), [key] — pl. -ses the period or act of expansion in flowers, esp. the maturing of the stamens. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: anthesis (Thesaurus) antherozoid Anthesteria Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language