oort cloud | sense examples, Usage and Definition from wordnet dictionary online

Noun oort cloud has 1 sense

Oort cloud - (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
--₁ is a kind of collection, aggregation, accumulation, assemblage

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