molluscan

adj

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

The verdict

“molluscan” is uncommon English (frequency #95,151 among 36,575 “M” headwords), classed as an adjective. The kind of spelling people second-guess.

#95,151
frequency rank, English
36,575
“M” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Pertaining to molluscs.

Key facts for molluscan
PropertyValue
Headwordmolluscan
LanguageEnglish
Part of speechAdjective
Letters9
Frequency rank#95,151
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “molluscan” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). molluscan lands here:

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

molluscan is uncommon English at frequency #95,151 among 36,575 “M” headwords, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Pertaining to molluscs.".

molluscan doesn't appear in our generated misspelling index, which points to an orthography that plays by predictable English rules. No close-neighbour confusable shows up for this headword in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From phylum name Mollusca + -an. The correct English form is molluscan, spelled M-O-L-L-U-S-C-A-N.

Definition

  1. 1
    Pertaining to molluscs.

Etymology

From phylum name Mollusca + -an.

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 "molluscan"?
"molluscan" is spelled M-O-L-L-U-S-C-A-N.
What does "molluscan" mean?
As an adjective, "molluscan" means: Pertaining to molluscs.
What is the origin of the word "molluscan"?
From phylum name Mollusca + -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.

Using “molluscan”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is M-O-L-L-U-S-C-A-N - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

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.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list