What is the meaning of Oort cloud?

noun

  • 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. (.
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). Oort cloud. Retrieved September 20, 2026, from http://smartdefine.org/oort_cloud/definitions/1223290
ChicagoWordNet. 2010. "Oort cloud" http://smartdefine.org/oort_cloud/definitions/1223290 (accessed September 20, 2026).
HarvardWordNet 2010, Oort cloud, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/oort_cloud/definitions/1223290>.
MLAWordNet. "Oort cloud" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/oort_cloud/definitions/1223290>