/ Dictionary / Index O oligomenorrhea: Meaning and Definition of Find definitions for: ol•i•go•men•or•rhe•a Pronunciation: (ol"i-gō-men"u-rē'u), [key] — n. Pathol. abnormally infrequent menstruation. abnormally scanty blood flow in menstruation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: oligomenorrhea (Thesaurus) oligogene oligomer Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language