- Perspiration is sweat.
An example of perspiration is the wetness in your arm pits after running a mile.
A man dismayed by the perspiration stains under his arm.
- the act of perspiring; sweating
- salty moisture given off in perspiring; sweat
Origin of perspirationFrench
- The fluid, consisting of water with small amounts of urea and salts, that is excreted through the pores of the skin by the sweat glands; sweat.
- The act or process of perspiring.
(usually uncountable, plural perspirations)