abecedarium

[ ey-bee-see-dair-ee-uh m ]
/ ˌeɪ bi siˈdɛər i əm /

noun, plural a·be·ce·dar·i·a [ey-bee-see-dair-ee-uh] /ˌeɪ bi siˈdɛər i ə/.

a primer, especially for teaching the alphabet.

Origin of abecedarium

From Medieval Latin