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Hyoid arch

hyoid arch n.
The second postoral arch in the branchial arch series.


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  • Hyoidean

    [hahy-oid] /ˈhaɪ ɔɪd/ Anatomy, Zoology adjective 1. Also, hyoidal, hyoidean. noting or pertaining to a U -shaped bone at the root of the tongue in humans, or a corresponding bone or collection of bones in animals. noun 2. the hyoid bone. /ˈhaɪɔɪd/ adjective 1. of or relating to the hyoid bone noun 2. the horseshoe-shaped […]

  • Hyolithid

    [hahy-ol-i-thid] /haɪˈɒl ɪ θɪd/ noun 1. any invertebrate of the extinct genus Hyolithes, most common in the Cambrian Period, having a limy, univalve shell, and thought to be related to the pteropods. adjective 2. belonging or pertaining to Hyolithes.

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  • Hyoscyamine

    [hahy-uh-sahy-uh-meen, -min] /ˌhaɪ əˈsaɪ əˌmin, -mɪn/ noun, Pharmacology. 1. a poisonous alkaloid, C 17 H 23 NO 3 , obtained from henbane and other solanaceous plants, used as a sedative, analgesic, mydriatic, and antispasmodic. /ˌhaɪəˈsaɪəˌmiːn; -mɪn/ noun 1. a poisonous alkaloid occurring in henbane and related plants: an optically active isomer of atropine, used in […]

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