zero gravity

American  

Also zero-g,

noun

Physics.

1. the condition in which the apparent effect of gravity is zero, as in the case of a body in free fall or in orbit.

---

zero gravity British  

noun

1. the state or condition of weightlessness

---

zero gravity Scientific  

1. The condition of real or apparent weightlessness occurring when any gravitational forces acting on a body meet with no resistance so the body is allowed to accelerate freely. Bodies in free fall (including trajectories like orbits) experience zero gravity; bodies at rest on the Earth's surface do not, since they are subject to the counterforce of the surface supporting them.

---

Etymology

Origin of zero gravity

First recorded in 1950–55

Example Sentences

This space architecture lab is trying to build the future in zero gravity.

From The Wall Street Journal • May 8, 2026

"It's really fun to be floating around" in zero gravity, he added.

From Barron's • Apr. 3, 2026

The performer sang “What a Wonderful World” while in zero gravity, kissed the ground upon landing and said the launch made her feel “super connected to love.”

From Los Angeles Times • Apr. 30, 2025

Three different machines help to counter the effect of living in zero gravity.

From BBC • Mar. 17, 2025

Suddenly I feel like I’m in zero gravity, untethered from my surroundings.

From "The Last Cuentista" by Donna Barba Higuera