Planetoid

Quick meaning: Planetoid is a noun meaning (astronomy, dated) An asteroid of any size.

Meaning

(astronomy, dated) An asteroid of any size.

More Meanings

1. (astronomy, dated) An asteroid-like body in an orbit beyond the asteroid belt, such as a centaur or Kuiper belt object
2. (astronomy) A larger, planetary, body in orbit around the Sun, such as Vesta or (candidate) dwarf planets such Eris or Sedna
3. (astronomy) Any planetary body, including classical planets and moons: a planetary-mass object
4. (astronomy) A dwarf planet

Example Sentences

A dwarf planet or a planetoid is a celestial body that [...]

Eris [...] was the upstart planetoid that knocked Pluto off the planetary lists

We prefer the word "planetoid" as a new word to describe round objects orbiting the sun.

Numbering of the Planetoids or Asteroidal Planets.—In numbering the planetoids a difficulty has arisen [...]

Word Forms

• planetoids

Synonyms for planetoid

Depending on context, synonyms include asteroid.

Related Words

Related dictionary entries include asteroid, asterite, neoasteroid, exoasteroid, apollo, planetarian.

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