Pronunciation: (ek"trō-mē'lē-u), [key]
1. Med.the congenital absence or imperfection of a limb or limbs.
2. Also called infectious ectromelia, mousepox. Vet. Pathol.a viral disease of mice, characterized by gangrene of the extremities, swelling and loss of limbs, and mottling of the liver.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.