|

Oort cloud

DEFINITIONS OF: Oort cloud

1

n (astronomy) a hypothetical huge collection of comets orbiting the sun far beyond the orbit of Pluto; perturbations (as by other stars) can upset a comet's orbit and may send it tumbling toward the sun

Type of:
accumulation, aggregation, assemblage, collection
several things grouped together or considered as a whole
WORD FAMILY
USAGE EXAMPLES