ctenidium

 
Pronunciation: /tɪˈnɪdɪəm/

noun (plural ctenidia /-dɪə/)

Zoology
  • a comb-like structure, especially a respiratory organ or gill in a mollusc, consisting of an axis with a row of projecting filaments.

Origin:

late 19th century; modern Latin, from Greek ktenidion, diminutive of kteis, kten- 'comb'