A circumscribed thickening of the keratin layer of the epidermis as a result of repeated friction or intermittent pressure. SYN: callus (1), keratoma (1), poroma (1). [L. fr. callosus, thick-skinned]
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cal·los·i·ty ka-'läs-ət-ē, kə- n, pl -ties the quality or state of being callous esp marked or abnormal hardness and thickness (as of the skin)
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(callus)
n.
a hard thick area of skin occurring in parts of the body subject to pressure or friction. The soles of the feet and palms of the hands are common sites, and if much hard dead skin develops a callosity can become painful. A corn is a type of callosity.
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cal·los·i·ty (kə-losґĭ-te) [L. callositas, from callus] callus (def. 1).Medical dictionary. 2011.