1. In aquatic Mollusca, the respiratory (or in Bivalvia food-collecting) surface or gill situated in the mantle cavity.
2. In some Arthropoda, a fan-shaped, eversible comb of spines. See NYCTERIBIIDAE.
"ctenidium." A Dictionary of Zoology. . Encyclopedia.com. (March 20, 2019). https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/ctenidium
"ctenidium." A Dictionary of Zoology. . Retrieved March 20, 2019 from Encyclopedia.com: https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/ctenidium
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