trilobite
/ˈtɹaɪ.ləˌbaɪt/
"trilobite" is a 9-letter English headword indexed on PlainSpell.
The verdict
“trilobite” is uncommon English (frequency #91,085 among 3,151 “T” headwords), classed as a noun. The kind of spelling people second-guess.
- #91,085
- frequency rank, English
- 3,151
- “T” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An extinct arthropod of the class Trilobita, whose body had three large lobes.
Corpus desk
Index EN-trilobite · trilobite · English
trilobite · rank #91,085 · 0 variants · 0 confusables
- FREQ-RARE #91,085
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,151
- PHOTO-FINISH trioxide
Nearest frequency peer: trioxide (+1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Long-tail ranks near “trilobite”
Sparse band: bars invert rank so rarer forms read shorter
- toymaker
toymaker
8,922 corpus weight
- traineeship
traineeship
8,919 corpus weight
- trilobite
trilobite
8,916 corpus weight
- trioxide
trioxide
8,915 corpus weight
- tripos
tripos
8,914 corpus weight
- tropospheric
tropospheric
8,911 corpus weight
What this shows Long-tail view: where “trilobite” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | trilobite |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈtɹaɪ.ləˌbaɪt/ |
| Letters | 9 |
| Frequency rank | #91,085 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “trilobite” in English
Rare enough to double-check
trilobite is uncommon English at frequency #91,085 among 3,151 “T” headwords, classed as anoun, transcribed /ˈtɹaɪ.ləˌbaɪt/. Rarity is why readers land here mid-draft. Gloss: "An extinct arthropod of the class Trilobita, whose body had three large lobes.".
trilobite has no tracked misspelling variants, since its letter sequence doesn't invite the usual edit-distance slips. This headword has no recorded confusable partner, since its spelling is unusual enough that it doesn't cluster with a lookalike.
Etymologically, the entry records: Borrowed from translingual Trilobita. By surface analysis, tri- (“three”) + lobe + -ite (“mineral, individual”), literally “three-lober”. The correct English form is trilobite, spelled T-R-I-L-O-B-I-T-E.
Definition
- 1An extinct arthropod of the class Trilobita, whose body had three large lobes.
Recorded use
Wiktionary exampleThese source excerpts show how trilobite appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
When you look at a Precambrian trilobite in the lobby of a New York bank, it is difficult to speculate about its primeval environment.
Etymology
Borrowed from translingual Trilobita. By surface analysis, tri- (“three”) + lobe + -ite (“mineral, individual”), literally “three-lober”.
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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Similar English words by spelling shape
Same letter count and similar misspelling depth for "trilobite", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 9 letters (nearest by frequency rank).