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1785 (implied in calcified), from French calcifier, from stem of Latin calcem "lime" (see chalk (n.)) + -fy. Related: Calcifying; calcification.
calcify cal·ci·fy (kāl'sə-fī')v. cal·ci·fied, cal·ci·fy·ing, cal·ci·fies To make or become stony or chalky by deposition of calcium salts.