branchiostegal [brang-kee-os-ti-guh l]Ichthyology ExamplesWord Origin noun

  1. Also called branchiostegal ray. one of the long, curved bones just below the operculum, supporting the gill membranes.


  1. of or relating to the branchiostegals.

Origin of branchiostegal First recorded in 1740–50; branchio- + steg(o)- + -al1 Examples from the Web for branchiostegal Historical Examples of branchiostegal

  • These are the bones connected with respiration—the operculum, the branchiostegal rays, the branchial arches, and others.

    Form and Function

    E. S. (Edward Stuart) Russell

  • The mouth and branchial cavity were very much distended, rounding out and distorting the whole hyoid and branchiostegal region.

    A Guide to the Study of Fishes, Volume 1 (of 2)

    David Starr Jordan

  • The branchiostegal rays of the two sides are united in front by an unpaired membrane bone, the basi-branchiostegal (fig. 11, 36).

    The Vertebrate Skeleton

    Sidney H. Reynolds

  • To the cerato-hyal are attached a series of seven strong curved cylindrical rods, the branchiostegal rays.

    The Vertebrate Skeleton

    Sidney H. Reynolds

  • British Dictionary definitions for branchiostegal branchiostegal adjective

    1. zoology of or relating to the operculum covering the gill slits of fishbranchiostegal membrane; branchiostegal rays

    Word Origin for branchiostegal from branchia + Greek stegos roof

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