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Webster 1913 Edition
Mollusc
Mol′lusc
,Noun.
(Zool.)
Same as
Mollusk
. ☞ Formerly the Brachiopoda, Bryzoa, and Tunicata were united with the Lamellibranchiata in an artificial group called Acephala, which was also included under Mollusca. See
Molluscoidea
.