Also 7 transs- [ad. mod.L. tran(s)sūdātio, f. L. trans across + sūdātio a sweating. Cf. F. transsudation (18th c.).] The action or process of transuding; the passing off or oozing out of a liquid through the pores of a substance.
1612. Woodall, Surg. Mate, Wks. (1653), 274. Transudation is, when in descensory distillation, the essence provoked, sweateth through, and is carried … into the receiver.
1661. Boyle, Certain Physiol. Ess. (1669), 192. The drops … proceeded not from the transudation of the Liquor within the Glass.
1794. Sullivan, View Nat., I. xiv. 175. It causes transudations, evaporations, exhalations.
1848. Carpenter, Anim. Phys., 39. A simple transudation of the watery parts of the blood may take place … in the dead as in the living body.
attrib. 1899. Cagney, Jaksch’s Clin. Diagn., viii. (ed. 4), 418. Transudation fluids may be serous, sanious, or in rare instances, chylous.
b. concr. Something that is transuded.
1650. H. Brooke, Conserv. Health, 183. The more thick Transudation by the Ears.
1707. Curios. in Husb. & Gard., 101. The Manna of Calabria, and of Briançon, are only the Transudation of a Humour that breaths out of … Larch-Trees.
1897. Allbutt’s Syst. Med., IV. 322. The amount [of proteids] present in the transudations of renal disease are far below those seen in the transudations of cardiac disease.
