planetarium
/plænɪˈtɛəɹɪəm/
"planetarium" is a 11-letter English headword indexed on PlainSpell.
The verdict
“planetarium” has 16 generated spelling variants in the English index at frequency #39,961. The variants make it a useful spelling check.
- #39,961
- frequency rank, English
- 46,516
- “P” headwords
- 16
- tracked misspellings
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A display museum in which images of stars and other astronomical phenomena are projected onto a domed ceiling.
| Property | Value |
|---|---|
| Headword | planetarium |
| Language | English |
| Part of speech | Noun |
| IPA | /plænɪˈtɛəɹɪəm/ |
| Letters | 11 |
| Frequency rank | #39,961 |
| Misspellings tracked | 16 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “planetarium” sits in English frequency
A misspelling magnet
The generator records 16 spelling variants around planetarium (IPA /plænɪˈtɛəɹɪəm/), anoun. Corpus frequency is #39,961 among 46,516 “P” headwords. Wiktionary lists 2 senses, so context still picks the gloss.
Our generated misspelling index lists 16 likely wrong-spelling variants for planetarium, with forms such as "lpanetarium", "palnetarium", and "plaentarium". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. This headword has no recorded confusable partner, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: Borrowed from New Latin planētārium. Equivalent to planet + -arium. The correct English form is planetarium, spelled P-L-A-N-E-T-A-R-I-U-M.
Definition
- 1A display museum in which images of stars and other astronomical phenomena are projected onto a domed ceiling.
- 2An orrery.
Etymology
Borrowed from New Latin planētārium. Equivalent to planet + -arium.
This word in other languages
Common misspellings
Also misspelled as: lpanetarium,palnetarium,plaentarium,planeatrium,planetairum,planetarimu,planetariumm,planetarrium,planetaruim,planetraium,planettarium,plannetarium,plantearium,pllanetarium,plnaetarium,pplanetarium
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of planetarium - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
How do you spell "planetarium"?
What does "planetarium" mean?
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Is PlainSpell free to use?
Using “planetarium”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is P-L-A-N-E-T-A-R-I-U-M - every other letter order is a misspelling in standard orthography.
- Say it as /plænɪˈtɛəɹɪəm/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Browse more English words and confusable pairs in the same reference. English words
Same frequency band
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.