abe·ce·da·ry I. \ˌā(ˌ)bēˈsēdərē\noun (-es) Etymology: Middle English, from Medieval Latin abecedarium alphabet, primer, from neuter of Late Latin abecedarius of the alphabet, from the names of the letters a + b + c + d + Latin -arius -ary 1.: abecedarium 2.: abecedarian II. \| ̷ ̷(ˌ) ̷ ̷| ̷ ̷ ̷ ̷ ̷ ̷\adjective : abecedarian