Mollusca
noun plural
Mol·lus·ca
mə-ˈləs-kə 
: a large phylum of invertebrate animals (as snails, clams, and mussels) that have a soft unsegmented body lacking segmented appendages and commonly protected by a calcareous shell
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“Mollusca.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Mollusca. Accessed 22 Dec. 2024.
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