An abecedarium is an alphabet arranged in order, typically with each letter paired with a word or image that starts with that letter. It often serves as a teaching or display piece—historically used as a primer or clueing device for learning the alphabet, and in some contexts as a decorative or artistic exploration of letterforms. Key points:

• Basic definition: an inscription or book featuring the letters of an alphabet in order.

• Common purpose: educational primers for teaching children the alphabet, sometimes paired with illustrated words.

• Variants and uses: can appear in historical inscriptions (e.g., ancient or medieval contexts), modern art or design projects, and alphabet books for readers of various ages.