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.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.