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calcar cal·car (kāl'kär')
n. pl. cal·car·i·a (kāl-kâr'ē-ə)
A small spurlike projection from a structure.
An internal septum at the level of division of arteries and confluence of veins when branches or roots form an acute angle.
A dull spine or projection from a bone.
A horny outgrowth from the skin.