Mesopterygial

1 definition found

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

  Mesopterygium \Me*sop`te*ryg"i*um\, n. [NL., fr. Gr. me`sos
     middle + ? a fin.] (Anat.)
     The middle one of the three principal basal cartilages in the
     fins of fishes. -- {Me*sop`ter*yg"i*al}, a.
     [1913 Webster]