1. 
   Pneumoskeleton
   Pneu`mo·skel'e·ton noun [ Pneumo- + skeleton .] (Zoology) A chitinous structure which supports the gill in some invertebrates.
   Found op http://www.encyclo.co.uk/webster/P/113
   
   
2. 
   pneumoskeleton
   <zoology> A chitinous structure which supports the gill in some invertebrates. ... Origin: Pneumo- + skeleton. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?pneumoskeleton
   
   
3. 
   Pneumoskeleton
   • (n.) A chitinous structure which supports the gill in some invertebrates.
   Found op http://thinkexist.com/dictionary/meaning/pneumoskeleton/
   
   

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