noun cte·nid·i·um \-ēəm\

Definition of ctenidium



  1. 1 :  the gill of a mollusk consisting typically of a respiratory structure that resembles a comb or feather, has a main stem with lateral lamellae, and is developed from the inner side of the mantle —distinguished from ceras

  2. 2 :  a structure consisting of a row of spines resembling the teeth of a comb on the head or thorax, or both, of certain fleas

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Origin and Etymology of ctenidium

New Latin, from cten- + -idium

Seen and Heard

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a trip made at another's expense

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