Lewis Short
ăbĕcĕdārĭus | ăbĕcĕdāĭus, ĭi | ăbĕcĕdārĭa, ae | ăbĕ-cĕdārĭum, ĭi (noun M.f.n) : a, b, c, d
* Belonging to the alphabet, alphabetical (late Lat.).
* Adj.: psalmi,Aug. Retract. 1, 20.
* Subst.
* M., one who learns the a, b, c (eccl. Lat.).
* F., elementary instruction, Fulg. Myth. 3, 10.
* N., a, b, c, the alphabet (eccl. Lat.).
Charlton T. Lewis, Charles Short, A Latin Dictionary