Definition of impactor in English:

impactor

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

noun

chiefly Astronomy
  • An object (such as a meteorite) which 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.

More definitions of impactor

Definition of impactor in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space