Definition of impactor in English:


Syllabification: im·pac·tor
Pronunciation: /imˈpaktər


chiefly Astronomy
  • An object (such as a meteorite) that collides with another body.
    More 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.

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Word of the day astrogation
Pronunciation: ˌastrəˈgāSHən
(in science fiction) navigation in outer space