[lee-uh n-tahy-uh-sis]
noun Pathology.
  1. a lionlike facial distortion.
  2. Also called le·on·ti·a·sis os·se·a [os-ee-uh] /ˈɒs i ə/. an overgrowth of the cranial and facial bones resulting in a lionlike appearance.

Origin of leontiasis

< Greek leont-, stem of léōn lion + -iasis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for leontiasis

Historical Examples of leontiasis

  • The disease was called "leontiasis," and consisted of an enormous over-development of bone and skin on one side.

    A Labrador Doctor

    Wilfred Thomason Grenfell

leontiasis in Medicine


  1. The ridges and furrows on the forehead and cheeks of patients who have advanced lepromatous leprosy, giving a leonine appearance.leonine facies
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.