noun ·2 syllables ·Rare ·Advanced level

Definitions

Noun

1. 1
   A hypothetical electromagnetic or gravitational wave held together in a confined region by the gravitational attraction of its own field energy.
2. 2
   Any of a group of basic geometric forms capable of being recognised as a component of a real object.
3. 3
   A large unit of time, used to measure gradual geological change.

Etymology

Etymology 1

Coined by J. A. Wheeler from gravitational electromagnetic entity.

Etymology 2

From geometric + -on.

Etymology 3

Blend of geological + eon.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.