acephalocystmedical dictionary

<zoology> A larval entozoon in the form of a subglobular or oval vesicle, or hy datid, filled with fluid, sometimes found in the tissues of man and the lower animals; so called from the absence of a head or visible organs on the vesicle. These cysts are the immature stages of certain tapeworms. Also applied to similar cysts of different origin.

Origin: Gr. Without a head + bladder.

(01 Mar 1998)