protoplanet
noun
protoplanet is spelled P-R-O-T-O-P-L-A-N-E-T: 11 letters. It appears about once in every 93 million words in written English, the 309,272nd most frequent word form (wordfreq, 2021 data). As a noun, protoplanet means “An astronomical object, approximately the size of the Moon, formed from the mutual gravitational attraction of planetesimals; they are thought to…” (English Wiktionary, September 2026). The plural of protoplanet is protoplanets.
How many letters and syllables are in protoplanet?
| Letters | 11: P-R-O-T-O-P-L-A-N-E-T |
|---|---|
| In writing | about once in every 93 million words; the 309,272nd most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is protoplanet?
Protoplanet appears about once in every 93 million words in written English, the 309,272nd most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Forms of protoplanet
- protoplanets plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does protoplanet mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
An astronomical object, approximately the size of the Moon, formed from the mutual gravitational attraction of planetesimals; they are thought to collide with each other and slowly form planets
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Protoplanet in Spanish, French, German and Portuguese
In the sense astronomical object:
| Language | Words |
|---|---|
| French | protoplanète |
| German | Protoplanet |
| Portuguese | protoplaneta |
| Spanish | protoplaneta |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does protoplanet come from?
From proto- + planet.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).