trivalve

[ trahy-valv ]
/ ˈtraɪˌvælv /
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adjective

having three valves, as a shell.

noun

a trivalve shell.

Origin of trivalve

First recorded in 1675–85; tri- + valve
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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