/ Dictionary / Index A antemeridian: Meaning and Definition of Find definitions for: an•te•me•rid•i•an Pronunciation: (an"tē-mu-rid'ē-un), [key] — adj. occurring before noon. of or pertaining to the forenoon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: antemeridian (Thesaurus) antelope ante meridiem Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language