- The excretion of fluid by the sweat glands of the skin.
- All fluid loss through normal skin, whether by sweat gland secretion or by diffusion through other skin structures.
- The hypotonic fluid excreted by the sweat glands; it consists of water containing sodium chloride and phosphate, urea, ammonia, ethereal sulfates, creatinine, fats, and other waste products; the average daily quantity is estimated at about 1500 g.
[L. per-spiro, pp. -atus, to breathe everywhere]
See Also: sweat