observable universe
Astronomy
noun
The part of the entire universe that is (in principle) visible to an observer at a given time and place, i.e. that lies within the observer's particle horizon.
Origin
1930s; earliest use found in Science.
- prometryn
- prometryne
- promin
- prominence
- prominency
- prominent
- prominenti
- prominently
- prominent moth
- prominulous
- promisable
- promiscuity
- promiscuous
- promiscuously
- promiscuousness
- promise
- Promised Land
- promisee
- promiseful
- promiseless
- promiser
- promise (someone) the earth (or moon)
- promises, promises
- promising
- promisingly