terrarium
/təˈɹɛəɹ.ɪ.əm/
"terrarium" is a 9-letter English headword indexed on PlainSpell.
The verdict
“terrarium” is uncommon English (frequency #62,567 among 27,828 “T” headwords), classed as a noun. The kind of spelling people second-guess.
- #62,567
- frequency rank, English
- 27,828
- “T” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - An enclosure wherein small animals are displayed, usually with some plants, in a naturalistic setting.
| Property | Value |
|---|---|
| Headword | terrarium |
| Language | English |
| Part of speech | Noun |
| IPA | /təˈɹɛəɹ.ɪ.əm/ |
| Letters | 9 |
| Frequency rank | #62,567 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “terrarium” sits in English frequency
Rare enough to double-check
terrarium is uncommon English at frequency #62,567 among 27,828 “T” headwords, classed as anoun, transcribed /təˈɹɛəɹ.ɪ.əm/. Rarity is why readers land here mid-draft. 2 senses are on record.
Our edit-distance generator produced no likely misspellings for terrarium, since its letter pattern doesn't lend itself to common typo substitutions. This headword has no recorded confusable partner, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: From Latin terra (“earth”) + -arium, by analogy with aquarium. The correct English form is terrarium, spelled T-E-R-R-A-R-I-U-M.
Definition
- 1An enclosure wherein small animals are displayed, usually with some plants, in a naturalistic setting.
- 2A partially enclosed glass container for displaying plants, especially plants that need high humidity.
Etymology
From Latin terra (“earth”) + -arium, by analogy with aquarium.
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); 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
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Using “terrarium”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is T-E-R-R-A-R-I-U-M - every other letter order is a misspelling in standard orthography.
- Say it as /təˈɹɛəɹ.ɪ.əm/ (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
Other uncommon English words near this rank
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.