CTENIDIUM
ctenidium
(noun) comb-like respiratory structure serving as the gill of certain mollusks
Source: WordNet® 3.1
Etymology
Noun
ctenidium (plural ctenidia)
(zoology) A respiratory system, in the form of a comb, in some molluscs
(zoology) A row of spines in some insects
Source: Wiktionary
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Word of the Day
18 April 2025
GROIN
(noun) the crease at the junction of the inner part of the thigh with the trunk together with the adjacent region and often including the external genitals
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