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 segment : one of the constituent parts into which a body, entity, or quantity is divided or marked off by or as if by natural boundaries bronchopulmonary segments