comet

[ kom-it ]

/ ˈkɒm ɪt /

SEE SYNONYMS FOR comet ON THESAURUS.COM

noun Astronomy.

a celestial body moving about the sun, usually in a highly eccentric orbit, consisting of a central mass surrounded by an envelope of dust and gas that may form a tail that streams away from the sun.

Origin of comet

1150–1200; Middle English comete<Anglo-French, Old French <Latin comētēs,comēta<Greek komḗtēs wearing long hair, equivalent to komē-, variant stem of komân to let one's hair grow (derivative of kómē hair) + -tēs agent suffix

OTHER WORDS FROM comet

com·et·ar·y

[kom-i-ter-ee], /ˈkɒm ɪˌtɛr i/, co·met·ic

[kuh-met-ik], /kəˈmɛt ɪk/, co·met·i·cal, adjectivecom·et·like, adjective

Words nearby comet

come over, comer, come round, comes, comestible, comet, cometh, come through, come to, come to a halt, come to a head

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for comet

It’s one of the best photos Hubble has ever taken of any comet.
Hubble has spotted comet Neowise after it survived its journey around the sun|Neel Patel|August 25, 2020|MIT Technology Review
NASA has released new photos of Comet Neowise taken by the Hubble Space Telescope, revealing a close-up view of the brightest comet observed in decades after it passed around the sun this summer.
Hubble has spotted comet Neowise after it survived its journey around the sun|Neel Patel|August 25, 2020|MIT Technology Review
“We have an opportunity here to see the birth of a comet as it starts to become active,” says planetary scientist Kat Volk of the University of Arizona in Tucson.
In a first, astronomers spotted a space rock turning into a comet|Lisa Grossman|August 18, 2020|Science News
“This will be the first ever comet that we know its history, because we’ve seen it before being a comet,” Sarid says.
In a first, astronomers spotted a space rock turning into a comet|Lisa Grossman|August 18, 2020|Science News

A century later, as a comet carrying disease and social unrest has upended the world, Afrofuturism may be more relevant than ever.
This Week’s Awesome Tech Stories From Around the Web (Through July 18)|Singularity Hub Staff|July 18, 2020|Singularity Hub
They found that there are roughly 1,900 hydrogen atoms for each deuterium atom in the water on Comet 67P.
Are Comets the Origin of Earth’s Oceans?|Matthew R. Francis|December 14, 2014|DAILY BEAST
The probe appears to be sitting at the bottom of a "cliff" on the comet, but beyond that it's hard to tell.
Earthlings, We Landed on a Comet|Matthew R. Francis|November 12, 2014|DAILY BEAST
The basic approach went as planned: after separating from the Rosetta orbiter, Philae coasted slowly to the comet surface.
Earthlings, We Landed on a Comet|Matthew R. Francis|November 12, 2014|DAILY BEAST
Landing on any other world is hard, but Comet 67P is especially challenging, even apart from the low gravity.
Earthlings, We Landed on a Comet|Matthew R. Francis|November 12, 2014|DAILY BEAST
The comet is basically shaped like a rubber ducky, but with a much rougher surface.
Earthlings, We Landed on a Comet|Matthew R. Francis|November 12, 2014|DAILY BEAST
And Holmes's comet of 1892 displayed only a faint prismatic band devoid of any characteristic feature.
A Popular History of Astronomy During the Nineteenth Century|Agnes M. (Agnes Mary) Clerke
The imposing aspect of the comet in 1066 described in European chronicles of that time is confirmed by the Chinese Annals.
Astronomical Curiosities|J. Ellard Gore
Then a twist of the left handle-bar caused the Comet to slow down, and he pulled back on the bit.
Motor Matt's Daring, or, True to His Friends|Stanley R. Matthews
According to Biela's prediction, the comet returned every six years and thirty-eight weeks until 1852.
A History of the Nineteenth Century, Year by Year|Edwin Emerson
Well ship the Comet to Park Haven to-morrow, and then well go there ourselves to take part in the great race.
The Motor Boys in the Clouds|Clarence Young

British Dictionary definitions for comet

comet

/ (ˈkɒmɪt) /

noun

a celestial body that travels around the sun, usually in a highly elliptical orbit: thought to consist of a solid frozen nucleus part of which vaporizes on approaching the sun to form a gaseous luminous coma and a long luminous tail

Derived forms of comet

cometary or cometic (kɒˈmɛtɪk), adjective

Word Origin for comet

C13: from Old French comète, from Latin comēta, from Greek komētēs long-haired, from komē hair

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Cultural definitions for comet

comet

An object that enters the inner solar system, typically in a very elongated orbit around the sun. Material is boiled off from the comet by the heat of the sun, so that a characteristic tail is formed. The path of a comet can be in the form of an ellipse or a hyperbola. If it follows a hyperbolic path, it enters the solar system once and then leaves forever. If its path is an ellipse, it stays in orbit around the sun.

notes for comet

Comets were once believed to be omens, and their appearances in the sky were greatly feared or welcomed.

notes for comet

The most famous comet, Comet Halley (or Halley's comet), passes close to the Earth roughly every seventy-six years, most recently in 1986.

Scientific definitions for comet

comet

[ kŏm′ĭt ]

A celestial object that orbits the Sun along an elongated path. A comet that is not near the Sun consists only of a nucleus-a solid core of frozen water, frozen gases, and dust. When a comet comes close to the Sun, its nucleus heats up and releases a gaseous coma that surrounds the nucleus. A comet forms a tail when solar heat or wind forces dust or gas off its coma, with the tail always streaming away from the Sun.♦ Short-period comets have orbital periods of less than 200 years and come from the region known as the Kuiper belt. Long-period comets have periods greater than 200 years and come from the Oort cloud. See more at Kuiper belt Oort cloud. See Note at solar system.

单词	comet
释义	comet [ kom-it ] / ˈkɒm ɪt / SEE SYNONYMS FOR comet ON THESAURUS.COM noun Astronomy. a celestial body moving about the sun, usually in a highly eccentric orbit, consisting of a central mass surrounded by an envelope of dust and gas that may form a tail that streams away from the sun. Origin of comet 1150–1200; Middle English comete<Anglo-French, Old French <Latin comētēs,comēta<Greek komḗtēs wearing long hair, equivalent to komē-, variant stem of komân to let one's hair grow (derivative of kómē hair) + -tēs agent suffix OTHER WORDS FROM comet com·et·ar·y [kom-i-ter-ee], /ˈkɒm ɪˌtɛr i/, co·met·ic [kuh-met-ik], /kəˈmɛt ɪk/, co·met·i·cal, adjectivecom·et·like, adjective Words nearby comet come over, comer, come round, comes, comestible, comet, cometh, come through, come to, come to a halt, come to a head Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for comet It’s one of the best photos Hubble has ever taken of any comet. Hubble has spotted comet Neowise after it survived its journey around the sun\|Neel Patel\|August 25, 2020\|MIT Technology Review NASA has released new photos of Comet Neowise taken by the Hubble Space Telescope, revealing a close-up view of the brightest comet observed in decades after it passed around the sun this summer. Hubble has spotted comet Neowise after it survived its journey around the sun\|Neel Patel\|August 25, 2020\|MIT Technology Review “We have an opportunity here to see the birth of a comet as it starts to become active,” says planetary scientist Kat Volk of the University of Arizona in Tucson. In a first, astronomers spotted a space rock turning into a comet\|Lisa Grossman\|August 18, 2020\|Science News “This will be the first ever comet that we know its history, because we’ve seen it before being a comet,” Sarid says. In a first, astronomers spotted a space rock turning into a comet\|Lisa Grossman\|August 18, 2020\|Science News A century later, as a comet carrying disease and social unrest has upended the world, Afrofuturism may be more relevant than ever. This Week’s Awesome Tech Stories From Around the Web (Through July 18)\|Singularity Hub Staff\|July 18, 2020\|Singularity Hub They found that there are roughly 1,900 hydrogen atoms for each deuterium atom in the water on Comet 67P. Are Comets the Origin of Earth’s Oceans?\|Matthew R. Francis\|December 14, 2014\|DAILY BEAST The probe appears to be sitting at the bottom of a "cliff" on the comet, but beyond that it's hard to tell. Earthlings, We Landed on a Comet\|Matthew R. Francis\|November 12, 2014\|DAILY BEAST The basic approach went as planned: after separating from the Rosetta orbiter, Philae coasted slowly to the comet surface. Earthlings, We Landed on a Comet\|Matthew R. Francis\|November 12, 2014\|DAILY BEAST Landing on any other world is hard, but Comet 67P is especially challenging, even apart from the low gravity. Earthlings, We Landed on a Comet\|Matthew R. Francis\|November 12, 2014\|DAILY BEAST The comet is basically shaped like a rubber ducky, but with a much rougher surface. Earthlings, We Landed on a Comet\|Matthew R. Francis\|November 12, 2014\|DAILY BEAST And Holmes's comet of 1892 displayed only a faint prismatic band devoid of any characteristic feature. A Popular History of Astronomy During the Nineteenth Century\|Agnes M. (Agnes Mary) Clerke The imposing aspect of the comet in 1066 described in European chronicles of that time is confirmed by the Chinese Annals. Astronomical Curiosities\|J. Ellard Gore Then a twist of the left handle-bar caused the Comet to slow down, and he pulled back on the bit. Motor Matt's Daring, or, True to His Friends\|Stanley R. Matthews According to Biela's prediction, the comet returned every six years and thirty-eight weeks until 1852. A History of the Nineteenth Century, Year by Year\|Edwin Emerson Well ship the Comet to Park Haven to-morrow, and then well go there ourselves to take part in the great race. The Motor Boys in the Clouds\|Clarence Young British Dictionary definitions for comet comet / (ˈkɒmɪt) / noun a celestial body that travels around the sun, usually in a highly elliptical orbit: thought to consist of a solid frozen nucleus part of which vaporizes on approaching the sun to form a gaseous luminous coma and a long luminous tail Derived forms of comet cometary or cometic (kɒˈmɛtɪk), adjective Word Origin for comet C13: from Old French comète, from Latin comēta, from Greek komētēs long-haired, from komē hair Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Words related to comet falling star, bolide, fireball, meteorite, meteoroid Cultural definitions for comet comet An object that enters the inner solar system, typically in a very elongated orbit around the sun. Material is boiled off from the comet by the heat of the sun, so that a characteristic tail is formed. The path of a comet can be in the form of an ellipse or a hyperbola. If it follows a hyperbolic path, it enters the solar system once and then leaves forever. If its path is an ellipse, it stays in orbit around the sun. notes for comet Comets were once believed to be omens, and their appearances in the sky were greatly feared or welcomed. notes for comet The most famous comet, Comet Halley (or Halley's comet), passes close to the Earth roughly every seventy-six years, most recently in 1986. The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Scientific definitions for comet comet [ kŏm′ĭt ] A celestial object that orbits the Sun along an elongated path. A comet that is not near the Sun consists only of a nucleus-a solid core of frozen water, frozen gases, and dust. When a comet comes close to the Sun, its nucleus heats up and releases a gaseous coma that surrounds the nucleus. A comet forms a tail when solar heat or wind forces dust or gas off its coma, with the tail always streaming away from the Sun.♦ Short-period comets have orbital periods of less than 200 years and come from the region known as the Kuiper belt. Long-period comets have periods greater than 200 years and come from the Oort cloud. See more at Kuiper belt Oort cloud. See Note at solar system. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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comet

noun Astronomy.

Origin of comet

OTHER WORDS FROM comet

Words nearby comet

Example sentences from the Web for comet

British Dictionary definitions for comet

noun

Derived forms of comet

Word Origin for comet

Words related to comet

Cultural definitions for comet

notes for comet

notes for comet

Scientific definitions for comet