from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A kind of chaetopod larva in which no circles of cilia are developed.
from the GNU version of the Collaborative International Dictionary of English
- n. A kind of chætopod larva in which no circles of cilia are developed.
from The Century Dictionary and Cyclopedia
- Ciliated embryos of the polychætous annelids, in which the cilia form a broad zone around the body, leaving each end free of cilia, excepting, in some cases, a tuft on the head. See mesotrocha, telotrocha.
- In Rotifera, a group of wheel-animalcules having no cilia and the lobes highly modified in shape; the wheelless rotifers.
From Ancient Greek a- privative + a circle. (Wiktionary)