univalvular

== English == === Etymology === From uni- +‎ valvular. === Adjective === univalvular (not comparable) (botany, zoology) Having only one valve. ==== Synonyms ==== univalve, univalved === References === “univalvular”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.