Look up click, klik, or klick in Wiktionary, the free dictionary.
Noun. 1. induration-any pathological hardening or thickening of tissue. sclerosis. disseminated multiple sclerosis, disseminated sclerosis, MS, multiple sclerosis-a chronic progressive nervous disorder involving loss of myelin sheath around certain nerve fibers.
Medical Definition of absorption. 1  1: the process of absorbing or of being absorbed absorption of nourishment in the small intestineâcompare adsorption. 2  2: interception of radiant energy or sound waves.