Definitions

1. noun

A collection or case for holding or displaying the letters of the alphabet, especially in a decorative or ornamental way.

“The child’s abecedarium was a beautifully crafted wooden box with intricate carvings of letters and animals.”

2. noun

A book or other publication that contains the alphabet, often with illustrations or other educational materials.

“The old abecedarium on the shelf was a relic of the child’s early education.”