planetology
noun
planetology is a noun meaning “The study of planets, planetary systems and the solar system” (English Wiktionary, September 2026). It is spelled P-L-A-N-E-T-O-L-O-G-Y, and it appears about once in every 71 million words in written English (wordfreq, 2021 data).
What does planetology mean?
noun
- 1
The study of planets, planetary systems and the solar system.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How do you pronounce planetology?
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-planetology.wav, Wikimedia Commons (author and licence on each file's page).
How common is planetology?
Planetology appears about once in every 71 million words in written English, the 265,644th 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).
Planetology in Spanish, French, German and Portuguese
In the sense the study of planets:
| Language | Words |
|---|---|
| French | planétologie |
| German | Planetologie |
| Portuguese | planetologia, ciência planetária, astronomia planetária |
| Spanish | planetología, ciencias planetarias |
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 planetology come from?
From planet + -ology.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).