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Words, grammatical forms and meanings linked to the ontology.

planetoid en · NOUN

Pronunciation

Etymology

Etymology tree English planet Ancient Greek -ο- (-o-)der. Latin -o- Proto-Indo-European *weyd- Proto-Indo-European *-os Proto-Indo-European *wéydos Proto-Hellenic *wéidos Ancient Greek εἶδος (eîdos) Proto-Indo-European *-os Proto-Indo-European *-ēs Proto-Hellenic *-ēs Ancient Greek -ης (-ēs) Ancient Greek -ειδής (-eidḗs) Latin -oīdēslbor. English -oid English planetoid From planet + -oid.

Meanings

  1. (dated) An asteroid of any size
    • 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:
    • 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:
    • 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:
  2. (dated) An asteroid-like body in an orbit beyond the asteroid belt, such as a centaur or Kuiper belt object
  3. A larger, planetary, body in orbit around the Sun, such as Vesta or (candidate) dwarf planets such Eris or Sedna
    • 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:
    • 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:
  4. Any planetary body, including classical planets and moons: a planetary-mass object
    • 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 14, 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:
  5. A dwarf planet
    • 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):
    • '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:
    • A dwarf planet or a planetoid is a celestial body that [...] 2007, Hannu Karttunen et al., editors, Fundamental Astronomy, 5th edition, page 131:

Forms

SpellingFeaturesLabelsSource
planetoids Number=Plur lexicographic

Deriveds

planetoidal

Relateds

planemo · minor planet · microplanetoid · planetesimal · dwarf planet

Translations (19)

mk планетои́д (any of several larger astral bodies) · cmn 小行星 (any of several larger astral bodies) · ja 小惑星 (any of several larger astral bodies) · gv planaideen (any of several larger astral bodies) · fr planétoïde (any of several larger astral bodies) · pl planetoida (any of several larger astral bodies) · tl malabuntala (any of several larger astral bodies) · it pianetino (any of several larger astral bodies) · mk мала плане́та (any of several larger astral bodies) · io asteroido (any of several larger astral bodies) · hi क्षुद्रग्रह (any of several larger astral bodies) · ro planetoid (any of several larger astral bodies) · it asteroide (any of several larger astral bodies) · it planetoide (any of several larger astral bodies) · pt planetoide (any of several larger astral bodies) · ga mionphláinéad (any of several larger astral bodies) · ru ма́лая плане́та (any of several larger astral bodies) · ru плането́ид (any of several larger astral bodies) · de Planetoid (any of several larger astral bodies)