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plan′e·toi′dal (-toid′l) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Celestial Objects) another name for asteroid1
ˌplaneˈtoidal adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(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.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


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
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


n (Astron) → Planetoid m
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
References in periodicals archive ?
Adept minds studying contemporary science and science fiction see no hardship blending floating earths and planetoids with medieval conceptions of alternate places.
They revolve around the Sun and are sometimes called planetoids or minor planets.
2 shows the correspondence of orbital periods for planets and planetoids of the solar system with equipotential surfaces of the fundamental field F.
"We can learn from it what happened in the very beginning of the solar system: When you had sort of a stellar cloud that collapsed, when minerals started to form, when planetoids started to form for the very first time.
Clustering results Cluster Subject matter Purity Articles number(n) 1 Variety 0.1 713373 2 Poland 0.82 125 3 Accounts 1 6 4 Planetoids 0.69 2278 5 Ireland 0.91 43 6 Computers 0.88 53 7 People 0.61 53489 8 Biology 0.79 22555 9 Alliances 0.91 116 10 Railways 0.93 425 Cluster Number of references (m) Cluster Density [%] 1 19139451 0.0038 2 12945 82.8 3 19 52.7 4 82083 1.58 5 1677 90.6 6 2213 78.7 7 2256391 0.078 8 376728 0.074 9 13144 97.6 10 175978 97.4
We might also call ourselves planets or planetoids, ones on which most of our continents have yet to be discovered--we're held back in part by whatever external circumstances are operating, but we actively check the process as well by closing our inner eyes to ourselves, for we're afraid of nothing so much as of ourselves and of anything inside us that is unknown and remains unknown, which may be why we're so very afraid of one another, too.
It is more widely distributed in dusts, sands, planetoids and planets as various forms of silicon dioxide (silica) or silicates.
Washington, Oct 6 (ANI): Challenging popular theory about how part of our solar system formed, a University of Victoria PhD student has found evidence that the planet Neptune can't have knocked a collection of planetoids known as the Cold Classical Kuiper Belt to its current location at the edge of the solar system.
Gone are the mind-bending 3D jaunts across spherical planetoids, replaced instead with glorious 2D visuals which bring back memories of the Super Nintendo launch title Super Mario World.
Instead, "Galaxy" has the little Italian stereotype running around and between small planetoids. The first time players see Mario running upside down on a planet, or jumping from the bottom of one to the top of the other, causing the camera to flip, they may feel motion sickness.
As for everything else, which the IAU lumps together as "small solar-system bodies," I think we need only two more classes: asteroids (I'd actually prefer planetoids) and comets.
When a professional space explorer finds, by chance, the star Caravella which features a dozen planetoids, ore bearing space rocks, and an Earth-sized world of oceans and continents making it especially attractive to human settlement, he intends to return home to sell his discovery, but dies in a mishap.