mollusca
"mollusca" is a 8-letter English headword indexed on PlainSpell.
The verdict
“mollusca” is uncommon English (frequency #63,807 among 36,575 “M” headwords), classed as a noun. The kind of spelling people second-guess.
- #63,807
- frequency rank, English
- 36,575
- “M” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Molluscs considered as a group.
| Property | Value |
|---|---|
| Headword | mollusca |
| Language | English |
| Part of speech | Noun |
| Letters | 8 |
| Frequency rank | #63,807 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “mollusca” sits in English frequency
Rare enough to double-check
mollusca is uncommon English at frequency #63,807 among 36,575 “M” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Molluscs considered as a group.".
No misspelling variants are generated for mollusca in our index, which points to an orthography that plays by predictable English rules. Our confusable-pair dataset has no match for it, a sign it's visually distinctive enough not to be mixed up with another word.
No explicit etymology string is stored for this entry, so its spelling is best explained by sound-to-letter mapping rather than etymology. The correct English form is mollusca, spelled M-O-L-L-U-S-C-A.
Definition
- 1Molluscs considered as a group.
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 "mollusca"?
What does "mollusca" mean?
What language does "mollusca" come from?
Is PlainSpell free to use?
Using “mollusca”
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 - 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.