First Known Use: 1974
Dictionary
Oort cloud
noun \ˈȯrt-\
Definition of OORT CLOUD
: a spherical shell of cometary bodies believed to surround the sun far beyond the orbits of the outermost planets and from which some are dislodged when perturbed to fall toward the sun — compare kuiper belt
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Origin of OORT CLOUD
Jan Oort †1992 Dutch astronomer
Rhymes with OORT CLOUD
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