Pneumatocyst

Pneu·mat'o·cyst noun [ Pneumato- + cyst .] (Zoology) A cyst or sac of a siphonophore, containing air, and serving as a float, as in Physalia.
Found on http://www.encyclo.co.uk/webster/P/112

pneumatocyst

<zoology> A cyst or sac of a siphonophore, containing air, and serving as a float, as in Physalia. ... Origin: Pneumato- + cyst. ... Source: Websters Dictionary ... (01 Mar 1998) ...
Found on http://www.mondofacto.com/facts/dictionary?pneumatocyst

Pneumatocyst

• (n.) A cyst or sac of a siphonophore, containing air, and serving as a float, as in Physalia.
Found on http://thinkexist.com/dictionary/meaning/pneumatocyst/
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