What does asteroid mean?

Definitions for asteroid
ˈæs təˌrɔɪdas·ter·oid

Here are all the possible meanings and translations of the word asteroid.

Wiktionary

  1. asteroidnoun

    A naturally occurring solid object, which is smaller than a planet and is not a comet, that orbits a star

    Etymology: From ἀστεροειδής, from ἀστήρ + εἶδος.

  2. asteroidnoun

    In the Solar system, such a body that orbits within the orbit of Jupiter

    Etymology: From ἀστεροειδής, from ἀστήρ + εἶδος.

  3. asteroidnoun

    Any member of the taxonomic class Asteroidea; a starfish

    Etymology: From ἀστεροειδής, from ἀστήρ + εἶδος.

Princeton's WordNet

  1. asteroidadjective

    any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)

  2. asteroid, star-shapedadjective

    shaped like a star

Webster Dictionary

  1. Asteroidnoun

    a starlike body; esp. one of the numerous small planets whose orbits lie between those of Mars and Jupiter; -- called also planetoids and minor planets

    Etymology: [Gr. starlike, starry; 'asth`r star + e'i^dos form: cf. F. astrode. See Aster.]

Freebase

  1. Asteroid

    Asteroids are minor planets that are not comets, especially those of the inner Solar System. They have also been called planetoids, especially the larger ones. These terms have historically been applied to any astronomical object orbiting the Sun that did not show the disk of a planet and was not observed to have the characteristics of an active comet, but as small objects in the outer Solar System were discovered, their volatile-based surfaces were found to more closely resemble comets, and so were often distinguished from traditional asteroids. Thus the term asteroid has come increasingly to refer specifically to the small bodies of the inner Solar System out to the orbit of Jupiter. They are grouped with the outer bodies—centaurs, Neptune trojans, and trans-Neptunian objects—as minor planets, which is the term preferred in astronomical circles. In this article the term "asteroid" refers to the minor planets of the inner Solar System. There are millions of asteroids, many thought to be the shattered remnants of planetesimals, bodies within the young Sun's solar nebula that never grew large enough to become planets. The large majority of known asteroids orbit in the asteroid belt between the orbits of Mars and Jupiter or co-orbital with Jupiter. However, other orbital families exist with significant populations, including the near-Earth asteroids. Individual asteroids are classified by their characteristic spectra, with the majority falling into three main groups: C-type, S-type, and M-type. These were named after and are generally identified with carbon-rich, stony, and metallic compositions, respectively.

Chambers 20th Century Dictionary

  1. Asteroid

    as′tėr-oid, n. one of the minor planetary bodies revolving between the orbits of Mars and Jupiter.—adj. Asteroid′al. [Gr. astēr, a star, eidos, form.]

How to pronounce asteroid?

  1. Alex
    US English
    Daniel
    British
    Karen
    Australian
    Veena
    Indian

How to say asteroid in sign language?

Numerology

  1. Chaldean Numerology

    The numerical value of asteroid in Chaldean Numerology is: 9

  2. Pythagorean Numerology

    The numerical value of asteroid in Pythagorean Numerology is: 1

Examples of asteroid in a Sentence

  1. Dante Lauretta:

    Water probably did circulate through the interior of the asteroid, like a hydrothermal system on Earth, and altered the originally anhydrous rocky material, forming these clays.

  2. Lindley Johnson:

    While no known asteroid larger than 140 meters in size has a significant chance of hitting Earth for the next 100 years, NASA and its partners are studying several different methodologies for deflecting a hazardous asteroid.

  3. William Bottke:

    We can now apply this technique to study the surfaces of other planets to find out if they might also show more impacts, our findings also have implications for the history of life, which is punctuated by extinction events and rapid evolution of new species. Though the forces driving these events are complicated, asteroid impacts have surely played a role in this ongoing saga.

  4. Tomoyuki Kudo:

    Some studies suggested the radius of the ring is about where [our] solar systems asteroid belt would be. Other observations put the size out where Neptune would be, our ALMA observations provided a clear answer: Both are right.

  5. Christopher Onken:

    I could hardly believe my eyes when I came upon a little object that appeared to be moving across images taken by SkyMapper, these last images before the asteroid entered Earth's atmosphere were SkyMapper's biggest contribution. They helped to pinpoint both the search area for the meteorite fragments on Earth and the meteor's origin in space.

Images & Illustrations of asteroid

  1. asteroidasteroidasteroidasteroidasteroid

Popularity rank by frequency of use

asteroid#10000#24458#100000

Translations for asteroid

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