Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A young larval form of many annelids, mollusks, and bryozoans, in which a circle of cilia is developed around the anterior end.

from the GNU version of the Collaborative International Dictionary of English

  • n. A young larval form of many annelids, mollusks, and bryozoans, in which a circle of cilia is developed around the anterior end.

from The Century Dictionary and Cyclopedia

  • n. That larval form of various annelids, mollusks, and mulluscoids which has a circlet of cilia.

Etymologies

Ancient Greek a wheel + sphere. (Wiktionary)

Examples

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