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Sclerosis (Noun)

Any pathological hardening or thickening of tissue.

Nouns denoting natural processes.

The doctor diagnosed her with multiple sclerosis, a chronic disease characterized by the degeneration of the protective sheath surrounding nerve fibers.
The patient's condition was complicated by the presence of liver sclerosis, which made it difficult for the organ to function properly.
The pathologist's report indicated that the deceased had suffered from coronary sclerosis, which had led to a heart attack.
The symptoms of systemic sclerosis can vary widely, but often include thickening of the skin and damage to internal organs.
The patient's kidney function was impaired due to renal sclerosis, which had caused scarring and hardening of the tissue.