crustaceous

/kɹʌsˈteɪʃəs/

//kɹʌsˈteɪʃəs// adj

"crustaceous" is a 11-letter English headword indexed on PlainSpell.

The verdict

“crustaceous” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.

Unranked
below top-frequency English
11
letters

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

Corpus desk

Index EN-crustaceous · crustaceous · English

crustaceous · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 11 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "C" thin
  • PHOTO-UNK Peer pending

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.

Key facts for crustaceous
PropertyValue
Headwordcrustaceous
LanguageEnglish
Part of speechAdjective
IPA/kɹʌsˈteɪʃəs/
Letters11
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “crustaceous” in English

crustaceousfalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

crustaceous is uncommon English outside the top frequency list, classed as anadjective, transcribed /kɹʌsˈteɪʃəs/. Rarity is why readers land here mid-draft. 2 senses are on record.

crustaceous doesn't appear in our generated misspelling index, and the word's spelling is regular enough that our generator found nothing worth flagging. We don't track a confusable pairing for this entry, a sign it's visually distinctive enough not to be mixed up with another word.

This headword's origin isn't recorded in our source data, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is crustaceous, spelled C-R-U-S-T-A-C-E-O-U-S.

Definition

  1. 1
    Resembling a crustacean.
  2. 2
    Hard, thin and brittle.

Recorded use

Wiktionary examples

These source excerpts show how crustaceous appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. the crustaceous or ostreaceous body
  2. a crustaceous lichen

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 "crustaceous"?
"crustaceous" is spelled C-R-U-S-T-A-C-E-O-U-S. The IPA pronunciation is /kɹʌsˈteɪʃəs/.
What does "crustaceous" mean?
As an adjective, "crustaceous" means: Resembling a crustacean.
How do you pronounce "crustaceous"?
The IPA (International Phonetic Alphabet) transcription for "crustaceous" is /kɹʌsˈteɪʃəs/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "crustaceous" come from?
"crustaceous" is a English word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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.

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

Source: FrequencyWords open word-frequency list