concha definition

  • noun:
    • Anatomy any one of numerous frameworks, such as the external ear, that resemble a shell in shape. Also called conch.
    • Architecture The 1 / 2 dome over an apse.
    • Any shell-shaped construction.
    • The deepest indentation of this cartilage of this human being ear, attaching towards mastoid bone.
    • An apse, or even the simple semidome of an apse.
    • The ordinary semidome of an apse; sometimes employed for the entire apse.
    • The outside ear; esp. the largest and deepest concavity of additional ear, surrounding the entrance toward auditory canal.
    • In anatomy and zoology: The outer ear; the pinna regarding the ear; the auricle; especially, the shell associated with the ear, the hollowed part in the antihelix, leading to the meatus. See cut-under vehicle.
    • A shell of bone, or a bone like a shell; a turbinated bone.
    • just like chair, 6.
    • [ML., ⟩ OF. conque.] An old dry measure of Gascony and Navarre, about 5 pecks, Winchester measure.
    • identical to conch, 10.
    • The thin, clear layer of a bivalve mollusk, often useful for window-panes within the East Indies.
    • (physiology) a structure that resembles a shell in shape

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