Definition of ctenidium

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cte·nid·i·um  audio  (t-nd-m) KEY 

NOUN:
Zoology pl. cte·nid·i·a  (--) KEY 
A comblike structure, such as the respiratory apparatus of a mollusk or a row of spines in some insects.
ETYMOLOGY:
New Latin, from Greek kteis, kten-, comb


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