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plan′e·toi′dal (-toid′l) adj.


(Celestial Objects) another name for asteroid1
ˌplaneˈtoidal adj


(ˈæs təˌrɔɪd)

1. any of the thousands of small, solid bodies that revolve about the sun in orbits largely between Mars and Jupiter.
2. starlike.
[1795–1805; < Greek asteroeidḗs starry, starlike. See aster, -oid]
as`ter•oi′dal, adj.


Astronomy. any of thousands of small celestial bodies that revolve about the sun in orbits chiefly between those of Mars and Jupiter ranging in diameter from one mile to 480 miles. Also called asteroids, minor planets. — planetoidal, adj.
See also: Planets
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.planetoid - any of numerous small celestial bodies that move around the sunplanetoid - any of numerous small celestial bodies that move around the sun
asteroid - any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
celestial body, heavenly body - natural objects visible in the sky
KBO, Kuiper belt object - any of many minor planets in the Kuiper belt outside the orbit of Neptune at the edge of the solar system
solar system - the sun with the celestial bodies that revolve around it in its gravitational field


n (Astron) → Planetoid m
References in periodicals archive ?
Caption: A STREAMER OF OBSCURATION In this smoothed reconstruction from 5 minutes of data around a "primary" transit, the planetoid speeding around WD 1145 (black disk, drawn to scale) is surrounded by an opaque dust cloud with a thick extension orbiting behind it and a sparser, narrower extension ahead of it.
Twelve-year-old Christopher and his family live on a planetoid with other families, working as miners for terraforming companies.
BHA counsel Louis Weston QC raised the case of Planetoid, who joined Best to go jumping with a similar Flat rating to Echo Brava.
In-form Planetoid is taken to make a successful return to the Flat in the Berrys Handicap at Wolverhampton.
Planetoid can claim a fourth course win in the Lingfield Park Handicap.
Planetoid looks feasibly treated on his return to allweather racing and a bold bid looks assured.
7) Because gauna have no particular qualities, but rather any quality required in the moment--we see them in all sorts of forms, from fungoid to planetoid, from crustacean to cetacean--they represent a kind of life that is at once infinite in possibility, but (humanly speaking) empty (Fig.
The BHA has pledged to hold a probe, just as they did when McCoy deputised for Mattie Batchelor -- stricken with a puncture (and no spare) just outside Wincanton -- when Best's Planetoid landed a punt at Newton Abbot in June last year.
Music Gaddamn Draculas, Planetoid, Pale Nephews, 9 p.
The crew of an intergalactic space tug intercept an SOS call from an alien planetoid but when they check it out one of them is attacked by an organism that attaches to his face.
Astronomers spotted icy rings encircling the planetoid Chariklo, a 250-kilometerwide hunk of ice and rock that orbits the sun between Saturn and Uranus.
Seismic data indicate that the western and eastern hemispheres of Earth's inner core differ, and this has led some to suggest that the core was once subjected to an impulse - presumably from the collision of a space rock or planetoid which shook the whole Earth.