As nouns the difference between mollusc and operculate
is that mollusc is a soft-bodied invertebrate of the phylum mollusca, typically with a hard shell of one or more pieces while operculate is any gastropod mollusc that has an operculum.
As an adjective operculate is
having an operculum.
mollusc
Alternative forms
* (US) mollusk
Noun
(
en noun)
A soft-bodied invertebrate of the phylum Mollusca, typically with a hard shell of one or more pieces.
(figuratively) A weak-willed person.
References
* (Mollusca)
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operculate
English
Synonyms
*operculated
Noun
(
en noun)
Any gastropod mollusc that has an operculum