astomate
adj. [Gr. a, without; stoma, mouth]
1. Lacking a mouth.
2. (ANNELIDA: Oligochaeta)
In earthworms, a closed nephridium, without a nephrostome.
3. (NEMATA)
Referring to a stoma lacking the cheilostome, but retaining an unexpanded esophastome.

Online Dictionary of Invertebrate Zoology. . 2005.

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