onomasticon

noun

on·​o·​mas·​ti·​con

ˌänəˈmastə̇ˌkän,

-kən

plural -s

1

a

: a collection or listing of words especially in a specialized field (as science or commerce)

b

: a work containing such a collection or listing : wordbook, lexicon

2

a

: a collection or listing of proper names of persons or places usually with etymologies

b

: a work containing such a collection or listing

Word History

Etymology

New Latin, from Greek onomastikon, from neuter of onomastikos onomastic

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now