ctenidium

American  

[ti-nid-ee-uhm] / tɪˈnɪd i əm /

noun

Zoology.

plural

ctenidia

1. any of various comblike or featherlike structures, as the row of stiff bristles on the legs of a psocid.

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ctenidium British  

/ tɪˈnɪdɪəm /

noun

1. one of the comblike respiratory gills of molluscs

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Other Word Forms

• ctenidial adjective

Etymology

Origin of ctenidium

From New Latin, dating back to 1880–85; see origin at cteno-, -idium

Example Sentences

Cephalic shield continuous with dorsal integument; no shell; ctenidium projecting from mantle cavity.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" by Various

The freely projecting ctenidium of typical form not having its axis fused to the roof of the branchial chamber is the notable character of this genus.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" by Various

Spiral fibre: the spiral thickening or folding of the chitinous lining of a trachea, which gives to the latter its characteristic microscopic appearance as well as its support and elasticity:= ctenidium.

From Explanation of Terms Used in Entomology by Smith, John. B.

Each gill has the structure of a typical molluscan ctenidium, consisting of an axis bearing an anterior and posterior row of filaments or lamellae.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 2 "Chicago, University of" to "Chiton" by Various

The left ctenidium or gill-plume. vent, Ventricle of the heart. a.b.v,

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" by Various