- (not in technical usage)
any region of space beyond the atmosphere of the earth
WordReference Random House Learner's Dictionary of American English © 2026
ˈout•er ˈspace, n. [uncountable]
WordReference Random House Unabridged Dictionary of American English © 2026- Astronomyspace beyond the atmosphere of the earth.
- Astronomyspace beyond the solar system;
deep space.
out′er space′,
- Astronomyspace beyond the atmosphere of the earth.
- AstronomySee deep space.
- 1875–80
Collins Concise English Dictionary © HarperCollins Publishers::
'outer space' also found in these entries (note: many are not synonyms or translations):
Canadarm
- alien
- astrogate
- being
- blast
- compute
- contactee
- cosmic
- cosmic ray
- cosmic rays
- cosmo-
- creature
- deep space
- dock
- establishment
- extraplanetary
- flight
- flying saucer
- humanoid
- infinite
- intelligent
- ion propulsion
- life-support
- meteorite
- reentry
- rendezvous
- sky
- space
- space law
- space man
- spaced-out
- spaceflight
- spaceman
- spacer
- spacesuit
- stagger
- vast