noun, Machinery.
a gear having teeth cut on an inner cylindrical surface.


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    internal hemorrhage n. Bleeding into organs or cavities of the body. Also called concealed hemorrhage.

  • Internal-hemorrhoid

    noun, Pathology. 1. See under . [hem-uh-roid, hem-roid] /ˈhɛm əˌrɔɪd, ˈhɛm rɔɪd/ noun 1. Usually, hemorrhoids. Pathology. an abnormally enlarged vein mainly due to a persistent increase in venous pressure, occurring inside the anal sphincter of the rectum and beneath the mucous membrane (internal hemorrhoid) or outside the anal sphincter and beneath the surface of […]

  • Internal-iliac-artery

    noun, Anatomy. 1. (def 3).

  • Internal iliac vein

    internal iliac vein n. See hypogastric vein.

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