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atrophy

(Encyclopedia) atrophyatrophyătˈrəfē [key], diminution in the size of a cell, tissue, or organ from its fully developed normal size. Temporary atrophy may occur in muscles that are not used, as when…

acquired characteristics

(Encyclopedia) acquired characteristics, modifications produced in an individual plant or animal as a result of mutilation, disease, use and disuse, or any distinctly environmental influence. Some…

myxedema

(Encyclopedia) myxedemamyxedemamĭksədēˈmə [key], condition associated with severe hypothyroidism and lack of thyroid hormone in the adult. In the child it is known as cretinism. Symptoms include a…

pathology

(Encyclopedia) pathology, study of the cause of disease and the modifications in cellular function and changes in cellular structure produced in any cell, organ, or part of the body by disease. The…

Addison's disease

(Encyclopedia) Addison's disease [for Thomas Addison], progressive disease brought about by atrophy of the outer layer, or cortex, of the adrenal gland; it is also called chronic adrenocortical…

kwashiorkor

(Encyclopedia) kwashiorkorkwashiorkorkwăshˌēôrˈkôr [key], protein deficiency disorder of children. It is prevalent in overpopulated parts of the world where the diet consists mainly of starchy…

physical therapy

(Encyclopedia) physical therapy or physiotherapy, treatment of disorders of the muscles, bones, or joints by means of physical agents—heat, light, water, manual and electronic massage, and exercise.…

Perelman, S. J.

(Encyclopedia) Perelman, S. J. (Sidney Joseph Perelman)Perelman, S. J.pĕrˈəlmən [key], 1904–79, American comic writer, b. Brooklyn, N.Y. He entered the magazine world as a cartoonist for a New York…