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trivalve

American  
[trahy-valv] / ˈtraɪˌvælv /

adjective

  1. having three valves, as a shell.

noun

  1. a trivalve shell.

Etymology

Origin of trivalve

First recorded in 1675–85; tri- + valve

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.