WordNet (r) 3.0 (2006):

hypercalcemia
    n 1: the presence of abnormally high levels of calcium in the
         blood; usually the result of excessive bone resorption in
         hyperparathyroidism or Paget's disease [syn:
         hypercalcemia, hypercalcaemia] [ant: hypocalcaemia,
         hypocalcemia]