crustacea

noun

By · According to Wiktionary data (CC BY-SA) ·

"crustacea" is a 9-letter English headword indexed on PlainSpell.

The verdict

“crustacea” is uncommon English (frequency #99,140 among 5,599 “C” headwords), classed as a noun. The kind of spelling people second-guess.

#99,140
frequency rank, English
5,599
“C” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Crustaceans.

Corpus desk

Index EN-crustacea · crustacea · English

crustacea · rank #99,140 · 0 variants · 0 confusables

  • FREQ-RARE #99,140
  • LEN-LONG 9 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 5,599
  • PHOTO-FINISH cruciferous

Nearest frequency peer: cruciferous (-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 “crustacea”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “crustacea” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for crustacea
PropertyValue
Headwordcrustacea
LanguageEnglish
Part of speechNoun
Letters9
Frequency rank#99,140
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “crustacea” in English

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).crustaceafalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “cruciferous” (#99,139), “Cristi” (#99,138), “crake” (#99,135). Among 5,599 “C” headwords, “crustacea” is #99,140. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

crustacea is uncommon English at frequency #99,140 among 5,599 “C” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Crustaceans.".

We couldn't generate a plausible misspelling set for crustacea, a straightforward case of a spelling with little room for common typos. Our confusable-pair dataset has no match for it, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: From taxonomic name Crustacea. The correct English form is crustacea, spelled C-R-U-S-T-A-C-E-A.

Definition

  1. 1
    Crustaceans.

Etymology

From taxonomic name Crustacea.

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 "crustacea"?
"crustacea" is spelled C-R-U-S-T-A-C-E-A.
What does "crustacea" mean?
As a noun, "crustacea" means: Crustaceans.
What is the origin of the word "crustacea"?
From taxonomic name Crustacea. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "crustacea", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 9 letters (nearest by frequency rank).

curiouser#99,146crabapple#99,132collinear#99,117codeshare#99,113

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list