Tyrannosaurus rex
/taɪˌɹænəˈsɔːɹəs ˈɹɛks/
"tyrannosaurus-rex" is a 16-letter English headword indexed on PlainSpell.
The verdict
“Tyrannosaurus rex” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 17
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A giant carnivorous theropod dinosaur from the Cretaceous period.
| Property | Value |
|---|---|
| Headword | Tyrannosaurus rex |
| Language | English |
| Part of speech | Noun |
| IPA | /taɪˌɹænəˈsɔːɹəs ˈɹɛks/ |
| Letters | 17 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “Tyrannosaurus rex” sits in English frequency
Rare enough to double-check
Tyrannosaurus rex is uncommon English outside the top frequency list, classed as anoun, transcribed /taɪˌɹænəˈsɔːɹəs ˈɹɛks/. Rarity is why readers land here mid-draft. Gloss: "A giant carnivorous theropod dinosaur from the Cretaceous period.".
Tyrannosaurus rex has no tracked misspelling variants, suggesting the orthography follows predictable English patterns. Our confusable-pair dataset has no match for it, since its spelling is unusual enough that it doesn't cluster with a lookalike.
This headword's origin isn't recorded in our source data, so spelling patterns must be inferred from the word's phoneme-to-grapheme mapping rather than from a documented borrowing chain. The correct English form is Tyrannosaurus rex, spelled T-Y-R-A-N-N-O-S-A-U-R-U-S- -R-E-X.
Definition
- 1A giant carnivorous theropod dinosaur from the Cretaceous period.
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.
Frequently Asked Questions
How do you spell "Tyrannosaurus rex"?
What does "Tyrannosaurus rex" mean?
How do you pronounce "Tyrannosaurus rex"?
What language does "Tyrannosaurus rex" come from?
Is PlainSpell free to use?
Using “Tyrannosaurus rex”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is T-Y-R-A-N-N-O-S-A-U-R-U-S- -R-E-X - every other letter order is a misspelling in standard orthography.
- Say it as /taɪˌɹænəˈsɔːɹəs ˈɹɛks/ (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
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.