1. 
   Siphonobranchiata
   Si`pho·no·bran`chi·a'ta noun plural [ New Latin See Siphon , and Branchia .] (Zoology) 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 gil...
   Found op http://www.encyclo.co.uk/webster/S/108
   
   
2. 
   siphonobranchiata
   <zoology> 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. ... Origin: NL. See Siphon, and Branchia. ... Source: Websters Dictionary ...
   Found op http://www.mondofacto.com/facts/dictionary?siphonobranchiata
   
   
3. 
   Siphonobranchiata
   • (n. pl.) 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.
   Found op http://thinkexist.com/dictionary/meaning/siphonobranchiata/
   
   

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