cetacean

/sɪˈteɪʃən/

//sɪˈteɪʃən// adj

"cetacean" is a 8-letter English headword indexed on PlainSpell.

The verdict

“cetacean” is uncommon English (frequency #75,710 among 5,599 “C” headwords), classed as an adjective. The kind of spelling people second-guess.

#75,710
frequency rank, English
5,599
“C” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Pertaining to the zoologic infraorder Cetacea, or associated with species falling under that taxonomic hierarchy.

Corpus desk

Index EN-cetacean · cetacean · English

cetacean · rank #75,710 · 0 variants · 0 confusables

  • FREQ-RARE #75,710
  • LEN-LONG 8 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 5,599
  • PHOTO-FINISH carvel

Nearest frequency peer: carvel (-4 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 “cetacean”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for cetacean
PropertyValue
Headwordcetacean
LanguageEnglish
Part of speechAdjective
IPA/sɪˈteɪʃən/
Letters8
Frequency rank#75,710
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “cetacean” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).cetaceanfalls 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: “carvel” (#75,706), “Carre” (#75,705), “chapbook” (#75,715). Among 5,599 “C” headwords, “cetacean” is #75,710. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

cetacean is uncommon English at frequency #75,710 among 5,599 “C” headwords, classed as anadjective, transcribed /sɪˈteɪʃən/. Rarity is why readers land here mid-draft. 2 senses are on record.

We couldn't generate a plausible misspelling set for cetacean, and the word's spelling is regular enough that our generator found nothing worth flagging. This headword has no recorded confusable partner, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From translingual Cetacea, from Latin cētus (“whale”), + -an. The correct English form is cetacean, spelled C-E-T-A-C-E-A-N.

Definition

  1. 1
    Pertaining to the zoologic infraorder Cetacea, or associated with species falling under that taxonomic hierarchy.
  2. 2
    Resembling or relating to large aquatic mammals.

Recorded use

Wiktionary examples

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

  1. The poached blubber was definitely cetacean in origin, but the particular species could not be identified.
  2. She was not as demure as she was in Roanoke; she seemed at the beginning rather like she felt more comfortable in the oceanic atmosphere harpooning her opponent. Indeed, at times, it seemed she was Ahab and the witherwin Allen was her Moby Dick; but while she sails her Pequod just as intently toward a singular goal, her alastor is much less clear and she…

Etymology

From translingual Cetacea, from Latin cētus (“whale”), + -an.

Synonyms

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 "cetacean"?
"cetacean" is spelled C-E-T-A-C-E-A-N. The IPA pronunciation is /sɪˈteɪʃən/.
What does "cetacean" mean?
As an adjective, "cetacean" means: Pertaining to the zoologic infraorder Cetacea, or associated with species falling under that taxonomic hierarchy.
How do you pronounce "cetacean"?
The IPA (International Phonetic Alphabet) transcription for "cetacean" is /sɪˈteɪʃən/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "cetacean"?
From translingual Cetacea, from Latin cētus (“whale”), + -an. 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 "cetacean", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 8 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list