from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Plural form of peristoma.
from The Century Dictionary and Cyclopedia
- In Lamarck's classification, a family of trachelipod gastropods, having the aperture surrounded by a continuous lip or peristome, and including the genera Valvata, Paludina, and Ampullaria, now dissociated in different families. Also Peristomidæ.—2. [l. c.] Plural of peristoma.
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