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atrophy

(Encyclopedia) atrophy ăt´rəfē [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 a limb is ...

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 examples ar...

myxedema

(Encyclopedia) myxedema mĭksədē´mə [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 dry s...

kwashiorkor

(Encyclopedia) kwashiorkor kwăsh˝ēôr´kôr [key], protein deficiency disorder of children. It is prevalent in overpopulated parts of the world where the diet consists mainly of starchy vegetables, partic...

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. ...

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 cha...

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 ...

dementia

(Encyclopedia) dementia dĭmĕn´shə [key] [Lat.,=being out of the mind], progressive deterioration of intellectual faculties resulting in apathy, confusion, and stupor. In the 17th cent. the term was synon...

Perelman, S. J.

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

amyotrophic lateral sclerosis

(Encyclopedia) amyotrophic lateral sclerosis (ALS) ā˝mīətrōf´ik, sklĭrō´sĭs [key] or motor neuron disease, sometimes called Lou Gehrig's disease, degenerative disease that affects motor neur...