Oort cloud
nounEtymology A cloud-like structure, named after Dutch astronomer Jan Oort, who proposed it.
1
Astronomy, Natural sciences A roughly spherical region of space composed of comet-like bodies and other minor planets and asteroids that orbit distantly in a planetary system.
- Hyponyms
- Oort Cloud
- Coordinate terms
- Kuiper disc, Kuiper belt, asteroid belt