planetoid
"planetoid" is a 9-letter English headword indexed on PlainSpell.
The verdict
“planetoid” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 9
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An asteroid of any size
Corpus desk
Index EN-planetoid · planetoid · English
planetoid · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "P" thin
- PHOTO-UNK Peer pending
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
| Property | Value |
|---|---|
| Headword | planetoid |
| Language | English |
| Part of speech | Noun |
| Letters | 9 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “planetoid” in English
Rare enough to double-check
planetoid is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 5 senses are on record.
Our edit-distance generator produced no likely misspellings for planetoid, suggesting the orthography follows predictable English patterns. This entry stands alone in our confusable dataset, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From planet + -oid. The correct English form is planetoid, spelled P-L-A-N-E-T-O-I-D.
Definition
- 1An asteroid of any size
- 2An asteroid-like body in an orbit beyond the asteroid belt, such as a centaur or Kuiper belt object
- 3A larger, planetary, body in orbit around the Sun, such as Vesta or (candidate) dwarf planets such Eris or Sedna
- 4Any planetary body, including classical planets and moons: a planetary-mass object
- 5A dwarf planet
Recorded use
Wiktionary examplesThese source excerpts show how planetoid appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
The group of small bodies that circle round the Sun, outside the orbit of Mars, are known under the designation of the planetoids.
Numbering of the Planetoids or Asteroidal Planets.—In numbering the planetoids a difficulty has arisen [...]
Etymology
From planet + -oid.
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.