apeiron

noun

apei·​ron

əˈpīˌrän,

-pā-

plural apeira

-rə,

-ˌrä

: the unlimited, indeterminate, and indefinite ground, origin, or primal principle of all matter postulated especially by Anaximander

Word History

Etymology

Greek, from neuter of apeiros endless, infinite, from a- a- entry 2 + -peiron (from peirat-, peirar end, conclusion); akin to peri around

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