What is having two shells or valves which open and shut, as the oyster and certain seed vessels called?
bivalve — Having two shells or valves which open and shut, as the oyster and certain seed vessels. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17T00:00:00-07:00 · Modified: 2026-07-17T00:00:00-07:00