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hibernoma

(hī′bər-nōmə)
n. pl. hi•ber•no•mas
  1. A rare type of benign tumor in humans, consisting of brown fat that resembles the fat in certain hibernating animals.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.