from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A solid body, moving in space, that is smaller than an asteroid and at least as large as a speck of dust.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A relatively small (sand- to boulder-sized) fragment of debris in a solar system that produces a meteor when it hits the atmosphere

from the GNU version of the Collaborative International Dictionary of English

  • n. A small body moving through space, or revolving about the sun, which on entering the earth's atmosphere would be deflagrated and appear as a meteor.

from The Century Dictionary and Cyclopedia

  • n. A body traveling in space, and of the same nature as those which on entering the earth's atmosphere become visible as meteors.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. (astronomy) any of the small solid extraterrestrial bodies that hits the earth's atmosphere


Sorry, no etymologies found.


  • A meteoroid is matter revolving around the sun or any object in interplanetary space that is too small to be called an asteroid or a comet.

    Cosmic Projectiles

  • Once this space material starts falling toward Earth, it's called a meteoroid, and when it penetrates the Earth's atmosphere, it becomes a meteor, which is the term used to describe the visible "shooting star" portion.

    CBC | Top Stories News

  • A meteor appears when a particle or chunk of metallic or stony matter called a meteoroid enters Earth's atmosphere from outer space.

    The Oshkosh Northwestern Latest Headlines

  • Meteoroid: A meteoroid is a solid piece of interplanetary debris moving through space.

    Omaha World-Herald > Frontpage

  • Of course, both men are wrong, since a meteoroid is a rock traveling through space, a meteor is a rock that burns up in our atmosphere, and a rock that actually hits Earth's surface is a meteor ite.

    Locus Online News

  • A "shooting star" is the common name for the visible path of a meteoroid, which is a small particle of debris from the Solar system that enters the Earth's atmosphere.

    The Times of India

  • We may as well define the terms "meteoroid" and "asteroid" as well. Local News

  • In the opening scenes of the film, when everyone believes that the downed flying saucer was actually a large rock from space, learned astronomer Ted Lewis (McCormack) refers to it as a "meteoroid" while the ignorant policeman Vernon (Robert Patrick) dismisses it as a "meteor."

    Locus Online News

  • Dateline 1957: A "meteoroid" touchdown in the Mojave crash-lands an intergalactic marshal and his prey-a faux-cheap one-eyed purple people-melter à la

    Dallas Observer | Complete Issue

  • The purpose of the meeting is to assess NASA and Roscosmos plans to support a six-person crew aboard the International Space Station, including transportation, crew rotation, training, and micro meteoroid and orbital debris shielding.

    NASA Watch: April 2009 Archives


Log in or sign up to get involved in the conversation. It's quick and easy.