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hy·po·phar·ynx -'far-iŋ(k)s n, pl -pha·ryn·ges -fə-'rin-(.)jēz also -phar·ynx·es the laryngeal part of the pharynx extending from the hyoid bone to the lower margin of the cricoid cartilage
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n.
the part of the pharynx that lies below the level of the hyoid bone.
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hy·po·phar·ynx (hi″po-farґinks) pars laryngea pharyngis.Medical dictionary. 2011.