Definition of bivalve
(Entry 1 of 2)
: being or having a shell composed of two valves
bivalve
nounDefinition of bivalve (Entry 2 of 2)
: any of a class (Bivalvia synonym Pelecypoda) of typically marine mollusks (such as clams, oysters, or scallops) that have a 2-valved hinged shell, are usually filter feeders, and lack a distinct head
Test Your Vocabulary
Challenging Words You Should Know
-
- Often used to describe “the march of time,” what does inexorable mean?

Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share bivalve
Time Traveler for bivalve
The first known use of bivalve was in 1661
See more words from the same year