Nectostem

1 definition found

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

  Nectostem \Nec"to*stem\, n. [Gr. nhkto`s swimming + E. stem.]
     (Zool.)
     That portion of the axis which bears the nectocalyces in the
     {Siphonophora}.
     [1913 Webster]