| 单词 | meteoroid |
| 释义 | meteoroid[ mee-tee-uh-roid ] / ˈmi ti əˌrɔɪd / SEE SYNONYMS FOR meteoroid ON THESAURUS.COM noun Astronomy.any of the small bodies, often remnants of comets, traveling through space: when such a body enters the earth's atmosphere it is heated to luminosity and becomes a meteor. Origin of meteoroidFirst recorded in 1860–65; meteor + -oid WORDS THAT MAY BE CONFUSED WITH meteoroidmeteor, meteoric, meteorite, meteoroidWords nearby meteoroidmeteorite, meteorites, meteoritics, meteorogram, meteorograph, meteoroid, meteorol., meteorological, meteorological satellite, meteorology, meteorotropic Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for meteoroidmeteoroid / (ˈmiːtɪəˌrɔɪd) / nounany of the small celestial bodies that are thought to orbit the sun, possibly as the remains of comets. When they enter the earth's atmosphere, they become visible as meteors Derived forms of meteoroidmeteoroidal, adjectiveCollins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for meteoroidmeteoroid [ mē′tē-ə-roid′ ] A small, rocky or metallic body revolving in interplanetary space around the Sun. A meteoroid is significantly smaller than an asteroid, ranging from small grains or particles to the size of large boulders. The clustered meteoroids associated with regular annual meteor showers are believed to be very small particles of cometary debris. Meteoroids that survive their passage through the Earth's atmosphere and land as meteorites are somewhat larger, solitary bodies and are encountered in no predictable pattern. See Note at meteor. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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