planetoid

IPA: pɫˈænʌtɔɪd

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

Examples of "planetoid" in Sentences

It's not very big, but suddenly the planetoid is the talk of the solar system.
But I kind of like the word "planetoid," because planetoid it means planet-like.
One of the great cosmic tragedies in the past few years was the sad demotion of Pluto from a planet to a mere "planetoid".
The Paraman The small, fuse-replacing servo which had caused near panic among the entire population of, a planetoid was a funny little thing.
BROWN: Actually, as it stands right now, I would say there only eight planets, because I would say Pluto really deserves to be called a planetoid, too.
Today, CalTech astronomers announced the discovery of a "planetoid" eight billion miles from Earth, or more more than three times the distance of Pluto.
We don't have a good definition for planet, but this thing is a little bit smaller than something I'd be willing to call a planet, so we sort of made up the name planetoid to try to describe what it is.
The new "planetoid," named Sedna after an Inuit goddess who created the sea creatures of the Arctic, is by far the coldest and most distant object known to orbit the sun, a team of researchers announced.
Unless the Earth atmosphere derived from earlier impacts such as Theia in which, as I understand it, astronomers have models suggesting that Earth captured most of both "planetoid" atmospheres and left the Moon airless, there likely wasn't a primitive atmosphere for abiogenesis to occur in before the LHB.