ANTEMERIDIAN

ANTEMERID'IAN, adjective [ante, before, and meridian.]Being before noon; pertaining to the forenoon.

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antemeridian. Antemeridian, a. relating to the forenoon

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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.)