Category:Transpiration

Tran`spi*ra"tion, n. Etym: [f. transpiration.]

1. (physiol.)

Defn: the act or process of transpiring or excreting in the form of Vapor; exhalation, as through the skin or other membranes of the Body; as, pulmonary transpiration, or the excretion of aqueous vapor From the lungs. Perspiration is a form of transpiration. Cudworth.

2. (bot.)

Defn: the evaporation of water, or exhalation of aqueous vapor, from Cells and masses of tissue.

3. (physics)

Defn: the passing of gases through fine tubes, porous substances, or The like; as, transpiration through membranes.