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impactor Line breaks: im|pact¦or
Pronunciation: /ɪmˈpaktə/

Definition of impactor in English:


chiefly Astronomy
An object (such as a meteorite) which collides with another body.
Example sentences
  • Small impactors deliver meteorites, while large ones infrequently wreak global devastation.
  • The impactor and comet will collide at 10.2km per second, releasing the energy equivalent of 4.4 tonnes of exploding TNT.
  • Although dramatic images of the impact may be sent to Earth in near-real time by the Deep Impact spacecraft and its impactor, the spacecraft themselves have limited remote sensing capability.
Definition of impactor in:
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