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Webster 1913 Edition

Noun.

[Cf. F.

multivalve

(Zool.)

Any mollusk which has a shell composed of more than two pieces.

Noun.

[L. multus,many, and valvoe, valves, folding doors.] An animal which has a shell of many valves.

multivalve ‎(not comparable)

multivalve ‎(plural multivalves)