Siphonobranchiata

1 definition found

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

  Siphonobranchiata \Si`pho*no*bran`chi*a"ta\, n. pl. [NL. See
     {Siphon}, and {Branchia}.] (Zool.)
     A tribe of gastropods having the mantle border, on one or
     both sides, prolonged in the form of a spout through which
     water enters the gill cavity. The shell itself is not always
     siphonostomatous in this group.


     [1913 Webster]