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meteoroid

A Dictionary of Astronomy | 1997 | Copyright

meteoroid A small particle from a comet or asteroid in orbit around the Sun. While the distinction between a large meteoroid and a small asteroid may be somewhat blurred, the term meteoroid most commonly refers to a particle which gives rise to a meteor on entering Earth's atmosphere. Typical meteoroids in a meteor stream, such as that which produces the Perseid meteor shower, are a few millimetres in diameter, and have low densities (0.2–0.3 g/cm³). Meteoroids in the Geminid stream, whose parent body is the asteroid Phaethon, have a higher density, 2 g/cm³.

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meteoroid

The Oxford Pocket Dictionary of Current English | 2009 | Copyright

me·te·or·oid / ˈmētēəˌroid/ • n. Astron. a small body moving in the solar system that would become a meteor if it entered the earth's atmosphere. DERIVATIVES: me·te·o·roid·al / ˌmētēəˈroidl/ adj.

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meteoroid

A Dictionary of Earth Sciences | 1999 | | Copyright

meteoroid Small, extraterrestrial body, within the solar system, that may enter the Earth's atmosphere if its orbit around the Sun crosses that of the Earth. Strictly, at the point where a meteoroid enters the atmosphere it is referred to as a meteor; if it reaches the Earth's surface it is known as a meteorite.

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AILSA ALLABY and MICHAEL ALLABY. "meteoroid." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "meteoroid." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O13-meteoroid.html

AILSA ALLABY and MICHAEL ALLABY. "meteoroid." A Dictionary of Earth Sciences. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-meteoroid.html

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meteoroid

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

meteoroid see meteor .

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meteoroid

Oxford Dictionary of Rhymes | 2007 | Copyright

meteoroid •avoid, Boyd, Coed, droid, Floyd, Freud, Lloyd, overjoyed, self-employed, unalloyed, underemployed, unemployed, void •geoid • amoeboid (US ameboid) •globoid • cuboid • gadoid • typhoid •fungoid • discoid • tabloid • colloid •celluloid • mongoloid • alkaloid •coralloid • crystalloid • prismoid •arachnoid • sphenoid • hominoid •crinoid, echinoid •solenoid • humanoid • paranoid •hypoid • anthropoid • gabbroid •android • steroid • thyroid • hydroid •spheroid • meteoroid • Murgatroyd •Polaroid •haemorrhoid (US hemorrhoid) •asteroid • schizoid • factoid • mastoid •deltoid • planetoid • ovoid • trapezoid •rhizoid

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