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gravisphere

American

[grav-uh-sfeer] / ˈgræv əˌsfɪər /

noun

the area in which the gravitational force of a celestial body is predominant.

Etymology

Origin of gravisphere

gravi(ty) + sphere

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.