Definition of ctenidium in English:

ctenidium

Syllabification: cte·nid·i·um
Pronunciation: /təˈnidēəm
 
/

noun (plural ctenidia /-ˈnidēə/)

Zoology
  • A comblike structure, especially a respiratory organ or gill in a mollusk, consisting of an axis with a row of projecting filaments.
    More example sentences
    • Meanwhile, Pelseneer had come up with a classification of bivalves based on the structure of the ctenidia.
    • Chaetoderms lack pedal grooves, have ctenidia paired in a small posterior mantle cavity, have a cuticular shield around the mouth and the stomach and digestive glands are separate.
    • Polyplacophorans have six to 88 pairs of bipectinate ctenidia, the number of which is typically not species specific, increasing as the individual grows.

Origin

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

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