from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of several machines or devices in which a part impacts on another, or on a material


Sorry, no etymologies found.


  • Frankly, I think a major impactor is probably the most likely. abb1 says:

    Matthew Yglesias » David Petraeus, Jew-Hater

  • The impactor is expected to make a spectacular, football field-sized crater, seven to 15 stories deep, in the speeding comet.

    Smart Mobs » Blog Archive » Send Your Name to a Comet!

  • Keith's note: Hmm, LCROSS is an "impactor" - something that will crash into the moon at high speed.

    NASA Watch: Space Science News: June 2009 Archives

  • Carried aboard the impactor will be a standard mini-CD containing the names of comet, space and other enthusiasts from around the world.

    Smart Mobs » Blog Archive » Send Your Name to a Comet!

  • The best guess is that the impactor was a comet that measured perhaps a quarter of a mile (half a kilometer) wide. Community

  • NASA's Deep Impact space probe — which shares its name with a 1998 film about an asteroid that nearly destroys Earth — fires an 820-pound "impactor" today that will travel at 22,817 miles per hour into the Tempel-1 comet to collect scientific data.


  • With the flyby stage of the two-part spacecraft watching from a safe distance, an 820-pound, copper-core "impactor" craft smashed into the nucleus of comet Tempel 1 at 23,000 miles per hour, sending a huge, bright spray of debris into space...

    "Deep Impact" has "deep impact."

  • It is sent with an "impactor" that crashes near the moon's south pole.

    The Globe and Mail - Home RSS feed

  • NASA's mission to fire a high velocity "impactor" rocket into the moon to search for water is being widely criticized in the blogosphere.

    Green Options

  • It is especially timely as India launched an 11-payload mission to the Moon on Oct. 22, and the 1st payload, an "impactor" has successfully been sent to the surface, last Friday, sending pictures on the way down.

    Latest Articles


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