An alphabetical list or primer; a book teaching the alphabet or basic elements of a subject.
From French abécédaire, from Latin abecedarius (relating to the alphabet), from a-b-c-d (the first letters of the alphabet). Ultimately from the Latin names of the first letters.
The word literally comes from saying 'A-B-C-D'—abecedaires were the children's books of medieval times, and the term preserves that sound of learning your ABCs.
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