Dictionary.net

The insensible transpiration or exhalation continually going on at the surface of the skin and membranes. Sensible perspiration is called sweat. The perspiratory fluid is secreted by an appropriate glandular apparatus, termed by Breschet, diapnogenous, (F.) Appareil diapnogene; the sudoriparous glands, Glandulae sudoriparae, Organa sudoripara, sweat glands, consisting of a convoluted tube, situate beneath the true skin, and of spiral ducts, which open obliquely under the scales of the epidermis. A certain portion of the perspired fluid is thrown off by ordinary physical evaporation. The Pulmonary exhalation or transpiration is that which takes place into the bronchia, and is sent out with the expired air.