Share this entry
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:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources