bivalvous

== English == === Etymology === From bi- +‎ valve +‎ -ous. === Adjective === bivalvous (not comparable) (archaic) Having two valves; bivalvular. === References === “bivalvous”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.