Trimyarian

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Trimyarian \Trim`y*a"ri*an\, n. [Pref. tri + Gr. ?, ?, a
     muscle.] (Zool.)
     A lamellibranch which has three muscular scars on each valve.
     [1913 Webster]