| polycystid | <zoology> One of the Polycystidea. One of the Polycystina. Pertaining to the Polycystidea, or the Polycystina. Source: Websters Dictionary (01 Mar 1998) |
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| polycystidea | <zoology> A division of Gregarinae including those that have two or more internal divisions of the body. Origin: NL. See Poly-, and Cystidea. Source: Websters Dictionary (01 Mar 1998) |