Noun: planetoid
| Singular | planetoid |
| Plural | planetoids |
Sample Sentences
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The group of small bodies that circle round the Sun, outside the orbit of Mars, are known under the designation of the planetoids. [1856, Robert James Mann, A guide to astromomical science, page 231:]
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Numbering of the Planetoids or Asteroidal Planets.—In numbering the planetoids a difficulty has arisen [...] [1859, J.D. & E.S. Dana, The American journal of science, page 153:]
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[1979, Tsunami generation by pelagic planetoid impact:]
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if one can argue for the early existence of a few largely molten planetoids with dimension of kilometers or tens of kilometers, one can quite as easily argue for very large numbers of such planetoids. [1979, H.A. Zook, “On a New Model for the Generation of Chondrites”, in Lunar and Planetary Science, volume xii, page 1242:]
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[1991, Optimal trajectories for an ion driven spacecraft from earth to the planetoid Vesta:]
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After discovering "planetoids", bodies orbiting the Sun, even larger than Pluto's moon Charon ... the question of how Sedna and other planetoids came to be. [2009, Paul A. Czysz, Claudio Bruno, Future Spacecraft Propulsion Systems, pages 377–378:]
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Eris [...] was the upstart planetoid that knocked Pluto off the planetary lists [2009, Patricia Daniels, Robert Burnham, The New Solar System: Ice Worlds, Moons, and Planets Redefined, National Geographic Books, page 173:]
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Plate tectonics is a style of convection for an active planetoid where lid fragment (plate) motions reflect sinking of dense lithosphere in subduction zones […] In 2015 humanity completed a 50+ year effort to survey the 30 largest planets, asteroids, satellites, and inner Kuiper Belt objects, which we informally call “planetoids”. [2018 January 26, Stern, Gerya & Tackley, “Stagnant lid tectonics: Perspectives from silicate planets, dwarf planets, large moons, and large asteroids”, in Geoscience Frontiers, volume 9, number 1, pages 103-119:]
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We prefer the word "planetoid" as a new word to describe round objects orbiting the sun. [2006, Mike Brown, “Sedna”, in (Please provide the book title or journal name):]
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A dwarf planet or a planetoid is a celestial body that [...] [2007, Hannu Karttunen et al., editors, Fundamental Astronomy, 5th edition, page 131:]
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'Dwarf planet' is a dumb phrase. For years we've called things like Pluto and Xena 'planetoids'—planetlike. [2010, Mike Brown, How I Killed Pluto and Why It Had It Coming, page 223:]
Nouns inflected like planetoid
soldier's woundwort,
Nicosian,
whopper,
greypate,
tactile sign language,
chronotrope,
Rosie Lee,
dissentient,
photoinactivator,
sulphonediimine,
coastal waterfall,
residuary devise,
bituminization,
nitrosonaphthol,
smṛiti,
geosphere,
backscreen,
mensuralist,
flocculate,
flocculant, etc. (List truncated at 20 nouns)
Etymology
1. Etymology tree
2. English planet
3. Ancient Greek -ο- (-o-)der.
4. Latin -o-
5. Proto-Indo-European *weyd-
6. Proto-Indo-European *-os
7. Proto-Indo-European *wéydos
8. Proto-Hellenic *wéidos
9. Ancient Greek εἶδος (eîdos)
10. Proto-Indo-European *-os
11. Proto-Indo-European *-ēs
12. Proto-Hellenic *-ēs
13. Ancient Greek -ης (-ēs)
14. Ancient Greek -ειδής (-eidḗs)
15. Latin -oīdēslbor.
16. English -oid
17. English planetoid
18. From planet + -oid.
Verbs referencing "planetoid"
Finnish Nouns
planetoidi, Polish Nouns
planetoida.