different between kuiperoid vs asteroid

English

Alternative forms

• Kuiperoid

Etymology

Blend of Kuiper belt +? asteroid, a name suggested by Clyde Tombaugh, discoverer of Pluto.

Pronunciation

• IPA^(key): /?ka?p??o?d/

Noun

kuiperoid (plural kuiperoids)

1. (astronomy) A Kuiper belt object, such as Pluto

Usage notes

(astronomy) "Kuiperoid" is relatively uncommon. These objects are normally called Kuiper belt objects, commonly shortened to the acronym KBOs, or occasionally (and increasingly infrequently) asteroids.

Synonyms

• Kuiper belt object (KBO)

Derived terms

• kuiperoidal

Related terms

• asteroid

English

Pronunciation

• enPR: ?s't?-roid", IPA^(key): /?æst??o?d/

Etymology 1

Borrowed from Ancient Greek ??????????? (asteroeid?s), from ????? (ast?r, “star”) + ????? (eîdos, “form”).

Noun

asteroid (plural asteroids)

1. (zoology) Any member of the taxonomic class Asteroidea; a starfish

Related terms

Etymology 2

aster +? -oid Coined by William Herschel, terming these objects "star-like"

Noun

asteroid (plural asteroids)

1. (astronomy) A naturally occurring solid object, which is smaller than a planet and is not a comet, that orbits a star
2. (astronomy) In the Solar system, such a body that orbits within the orbit of Jupiter

Usage notes

The term "asteroid" has never been precisely defined. It was coined for objects which looked like stars in a telescope but moved like planets. These were known from the asteroid belt between Mars and Jupiter, and were later found co-orbiting with Jupiter (Trojan asteroids) and within the orbit of Mars. They were naturally distinguished from comets, which did not look at all starlike. Starting in the 1970s, small non-cometary bodies were found outside the orbit of Jupiter, and usage became divided as to whether to call these "asteroids" as well. Some astronomers restrict the term "asteroid" to rocky or rocky-icy bodies with orbits up to Jupiter. They may retain the term planetoid for all small bodies, and thus tend to use it for icy or rocky-icy bodies beyond Jupiter, or may use dedicated words such as centaurs, Kuiper belt objects, transneptunian objects, etc. for the latter. Other astronomers use "asteroid" for all non-cometary bodies smaller than a planet, even large ones such as Sedna and (occasionally) Pluto. However, the distinction between asteroid and comet is an artificial one; many outer "asteroids" would become comets if they ventured nearer the Sun. The IAU terminology since 2006 has been small Solar System body for any body that orbits the Sun directly and whose shape is not dominated by gravity.

Derived terms

Related terms

Translations

See also

• astroid
• comet
• meteor
• meteorite
• planetoid

Further reading

• asteroid in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• asteroid in The Century Dictionary, New York, N.Y.: The Century Co., 1911.

Anagrams

• ideators

Czech

Noun

asteroid m

1. asteroid

Declension

See also

• planetka

Related terms

• See astro-

Further reading

• asteroid in Kartotéka Novo?eského lexikálního archivu
• asteroid in Slovník spisovného jazyka ?eského, 1960–1971, 1989

Estonian

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Noun

asteroid (genitive asteroidi, partitive asteroidi)

1. asteroid

Declension

This noun needs an inflection-table template.

Further reading

• asteroid in Eesti keele seletav sõnaraamat

Indonesian

Noun

asteroid (first-person possessive asteroidku, second-person possessive asteroidmu, third-person possessive asteroidnya)

1. asteroid

Romanian

Etymology

Borrowed from French astéroïde.

Noun

asteroid m (plural asteroizi)

1. asteroid

Declension

Further reading

• asteroid in DEX online - Dic?ionare ale limbii române (Dictionaries of the Romanian language)

Serbo-Croatian

Noun

asterò?d m (Cyrillic spelling ?????????)

1. asteroid

Declension

Slovene

Pronunciation

• IPA^(key): /ast?r?í?t/

Noun

astero?d m inan

1. asteroid

Inflection

Further reading

• “asteroid”, in Slovarji Inštituta za slovenski jezik Frana Ramovša ZRC SAZU, portal Fran

Swedish

Pronunciation

• Rhymes: -i?d

Noun

asteroid c

1. asteroid

Declension