meteoroid
me·teo·roid
noun
1.
(astronomy) any of the small solid extraterrestrial bodies that hits the earth''s atmosphere
Origin
From meteor + -oid.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.