meteoroid

me·te·or·oid

M0251400 (mē′tē-ə-roid′)n. A solid body, moving in space, that is smaller than an asteroid and at least as large as a speck of dust.

meteoroid

(ˈmiːtɪəˌrɔɪd) n (Celestial Objects) any 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 ˌmeteorˈoidal adj

me•te•or•oid

(ˈmi ti əˌrɔɪd)

n. any of the small bodies of rock or metal traveling through space that, upon entering the earth's atmosphere, are heated to glowing and become meteors. [1860–65]

me·te·or·oid

(mē′tē-ə-roid′) A rocky celestial body that travels through interplanetary space in an orbit that crosses the Earth's orbit. See Note at meteor.

meteoroid

A solid body moving through space that is smaller than an asteroid.

Thesaurus

Noun

meteoroid - (astronomy) any of the small solid extraterrestrial bodies that hits the earth's atmospheremeteorastronomy, uranology - the branch of physics that studies celestial bodies and the universe as a wholeestraterrestrial body, extraterrestrial object - a natural object existing outside the earth and outside the earth's atmospheremeteorite - stony or metallic object that is the remains of a meteoroid that has reached the earth's surfacemeteor swarm - a group of meteoroids with similar paths

Translations

meteoroid

enUK

meteoroid:

see meteormeteor,
appearance of a small particle flying through space that interacts with the earth's upper atmosphere. While still outside the atmosphere, the particle is known as a meteoroid. Countless meteoroids of varying sizes are moving about the solar system at any time.
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meteoroid

(mee -tee-ŏ-roid) The collective term applied to meteoritic material in the Solar System, usually replaced by the terms micrometeorite for particles with mass less than 10^–6 gram and meteorite for bodies with mass greater than about 10⁵ grams. The majority of the mass of the meteoroid cloud around the Sun is made up of particles with individual masses between 10^–7 and 10^–3 gram. Meteoroids are usually produced by the decay of short-period comets and the collisional fragmentation of asteroids. In the main they move around the Sun in low-inclination direct orbits. The space density of meteoroids maximizes near the orbit of Mars and then falls off as 1/r ^1.5, where r is the distance from the Sun. Individual meteoroids in the mass range 10^–6 to 10⁴ grams are fragile crumbly rocky dust particles with a composition similar to carbonaceous chondrite meteorites. See also meteor.

Meteoroid

a relatively small solid body that moves in outer space. The aggregate of meteoroids revolving around the sun forms the meteoric material in interplanetary space. Meteoroids are cometary debris or fragments of asteroids and in their motion occasionally encounter the earth and other planets.

meteoroid

[′med·ē·ə‚rȯid] (astronomy) Any solid object moving in interplanetary space that is smaller than a planet or asteroid but larger than a molecule.

meteoroid

any 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

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Synonyms for meteoroid

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

Synonyms

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