ETYM Cf. French perspiration.
Excretion of water and dissolved substances from the sweat glands of the skin of mammals. Perspiration has two main functions: body cooling by the evaporation of water from the skin surface, and excretion of waste products such as salts.
Salty fluid secreted by sweat glands; SYN. sweat, diaphoresis, sudor, hidrosis, water.