keratoma

noun
ker·​a·​to·​ma | \ ˌker-ə-ˈtō-mə How to pronounce keratoma (audio) \
plural keratomas also keratomata\ -​mət-​ə How to pronounce keratomata (audio) \

Medical Definition of keratoma

1 : a hard thickened area of skin produced by hypertrophy of the horny layers : callus
2 : a tumorlike growth of horny tissue on the inner surface of the wall of a horse's hoof

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