Found 2 items, similar to antemeridian.
English → English (WordNet) Definition: antemeridian antemeridian adj : before noon [ant: postmeridian]
English → English (gcide) Definition: Antemeridian Antemeridian \An`te*me*rid"i*an\, a. [L. antemeridianus; ante + meridianus belonging to midday or noon. See Meridian.] Being before noon; in or pertaining to the forenoon. (Abbrev. a. m.) [1913 Webster]