variants
or mollusc
: any of a large phylum (Mollusca) of invertebrate animals (such as snails, clams, or squids) with a soft unsegmented body usually enclosed in a calcareous shell
broadly
: shellfish
Examples of mollusk in a Sentence
Recent Examples on the Web
The mollusks have filtered most of the lakes, turning them from their old greenish hue, which allowed for only a few feet of visibility, to clear blue.
—
Taylor Nicioli, CNN Money, 17 Sep. 2025
Exposure to specific proteins found in crustaceans, including shrimp, crab, and lobster—as well as mollusks such as clams, oysters, and mussels—can negatively impact the immune system.
—Nick Mordowanec, MSNBC Newsweek, 11 Sep. 2025
Millions of gastropods, like snails and mollusks from various species, died suddenly in Inle Lake.
—Lauren Liebhaber
september 5, Miami Herald, 5 Sep. 2025
The freshwater mollusks threaten the state’s water infrastructure by clogging pipes and power systems, and threaten aquatic ecosystems and habitats by outcompeting native species and contributing to algal blooms via filter feeding.
—Sacbee.com, 28 Aug. 2025
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Taylor Nicioli, CNN Money, 17 Sep. 2025
Exposure to specific proteins found in crustaceans, including shrimp, crab, and lobster—as well as mollusks such as clams, oysters, and mussels—can negatively impact the immune system.
—Nick Mordowanec, MSNBC Newsweek, 11 Sep. 2025
Millions of gastropods, like snails and mollusks from various species, died suddenly in Inle Lake.
—Lauren Liebhaber
september 5, Miami Herald, 5 Sep. 2025
The freshwater mollusks threaten the state’s water infrastructure by clogging pipes and power systems, and threaten aquatic ecosystems and habitats by outcompeting native species and contributing to algal blooms via filter feeding.
—Sacbee.com, 28 Aug. 2025
See All Example Sentences for mollusk
Cite this Entry
“Mollusk.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mollusk. Accessed 22 Sep. 2025.
Copy CitationKids Definition
mollusk
noun
mol·lusk
variants
or mollusc
: any of a large phylum of invertebrate animals (as snails, clams, and octopuses) with a soft body lacking segments and usually enclosed in a shell containing calcium
Medical Definition
mollusk
noun
mol·lusk
variants
or mollusc
: any invertebrate animal of the phylum Mollusca
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