Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A comblike structure, such as the respiratory apparatus of a mollusk or a row of spines in some insects.

from The Century Dictionary.

  • noun One of the gill-combs, gill-plumes, or primitive branchial organs of mollusks; the respiratory organ of a mollusk in a generalized Stage of development.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun zoology A respiratory system, in the form of a comb, in some molluscs
  • noun zoology A row of spines in some insects

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun comb-like respiratory structure serving as the gill of certain mollusks

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[New Latin, from Greek kteis, kten-, comb.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

This definition is lacking an etymology or has an incomplete etymology. You can help Wiktionary by giving it a proper etymology. (from the Greek for comb)

Examples

  • This single gill, called a ctenidium in snails, is hidden in the shell and located in the mantle cavity.

    Mollusca

  • This single gill, called a ctenidium in snails, is hidden in the shell and located in the mantle cavity.

    Featured Articles - Encyclopedia of Earth

  • But, apparently, it can also survive for considerable periods in water, which is not surprising, because it still maintains a vestigial gill ctenidium in its mantle cavity.

    Pomatiopsis lapidaria

  • They constitute the ctenidium or the gill of Truncatella caribaeensis.

    Dissection of Truncatella caribaeensis

  • They constitute the ctenidium or the gill of Truncatella caribaeensis.

    Archive 2008-05-01

  • But, apparently, it can also survive for considerable periods in water, which is not surprising, because it still maintains a vestigial gill ctenidium in its mantle cavity.

    Archive 2008-07-01

  • The snail extends it out of its shell to suck in water, which flows past the gill ctenidium in the left side of the mantle cavity, exchanges its oxygen with carbon dioxide, and then comes out the right side.

    Melongena's siphon

  • Partially unrolled siphon si of the marine gastropod Buccanum undatum. ct, ctenidium; me, mantle edge.

    Archive 2007-04-01

  • The snail extends it out of its shell to suck in water, which flows past the gill ctenidium in the left side of the mantle cavity, exchanges its oxygen with carbon dioxide, and then comes out the right side.

    Archive 2007-04-01

  • Partially unrolled siphon si of the marine gastropod Buccanum undatum. ct, ctenidium; me, mantle edge.

    Melongena's siphon

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