- the area in which the gravitational force of a celestial body is predominant.
Origin of gravisphere
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for gravisphere
Shortly after entering the moon's gravisphere it began to accelerate again.
He was thankful they were not required to wear their heavy pressure suits until well into the moon's gravisphere.
Drone Baker had entered the moon's gravisphere at the precise time spelled out by the earth computers.
Some would be caught in the gravisphere of planets, would crash down into strange worlds.