from The Century Dictionary and Cyclopedia
- n. An abbreviation of the Middle and New Latin Artium Baccalaureus, Bachelor of Arts. In England it is more commonly written B. A. See bachelor.
- n. An abbreviation of able-bodied, placed after the name of a seaman on a ship's papers.
- n. An abbreviation of Latin ante Christum, before Christ, used in chronology in the same sense as B. C.; army-corps.
- An abbreviation of the Latin phrase anno Domini, in the year of the Lord: as, A. D. 1887.
- An abbreviation of adjutant-general.
- An abbreviation of the Latin anno hejiræ, in the year of the hejira, or flight of Mohammed from Mecca, a. d. 622.
- An abbreviation of several Latin phrases in common use:
- Of artium magister, Master of Arts. M. A., which represents the English rendering, is now more usual in England, but in a purely Latin idiom the form A. M. is still preferable.
- Of anno mundi, in the year of the world: used in some systems of chronology.
- Of ante meridiem, before noon: as, the party will start at 10 A. M. (also written a. m. or a. m.). Frequently used as synonymous with morning or forenoon: as, I arrived here this A. M. (pronounced ā em), that is, this morning or forenoon.
- n. An abbreviation of Anglo-Saxon.
- In electricity, an abbreviation for alternating current.
- An abbreviation of Analytical Chemist.
- n. An abbreviation of Attorney-General.
- n. In astronomy, an abbreviation of Argelan-der-Oeltzen, referring to a catalogue of southern stars observed by Argelander in zones and reduced to a regular catalogue by Oeltzen.
- n. In electricity, an abbreviation of ampere-turn.
- n. An abbreviation of Authorized Version.
Sorry, no etymologies found.