porousness

[Eng. porous; -ne .] 1. The quality or state of being porous: porosity. "The porousne of its body, rendering it diaphanous." -South : Sermons , vol. iii., ser. ii. *2. A porous part; a pore. "They will forcibly get into the porousne of it, and pa between part and part."- Digby : On Bodies. por-pěz-ite, subst. [After Porpez, Brazil, where found; suff.- ite ( Min.).] Min.: A variety of native gold (q. v.), containing from five to nearly ten per cent. of palladium. por-phy-rą, s . [Gr. porphyra =the purple fish.] Bot.: A genus of Confervaceæ, tribe or family Halymedide ( Lindley ) of the order Ulvaceae ( Berke ley ). The purple or red frond is expanded, membranous, shortly-stalked; fructification consisting of scattered sori with oval spores, of tetraspores, and of antheridia. Porphyra vulgar is and P. lac i niata furnish Laver (q. v.). por-phy-rā-ceo us (ce as sh), a. [English por phyr(y); -aceous.] Resembling, or consisting of, porphyry; porphyritic. por-phyr-ě-ous, a . [Gr. porphyreos =the purple fish.] Brown-red; brown mixed with red. por-phy-ric, a. [Gr. porphyros =purple; Eng. suff. -ic.] (See compound.) porphyric-acid, s. Chem.: C10H4N2O7. Produced from euxanthone by the action of cold nitric acid of specific gravity 131. It is obtained as a yellow crystalline powder, which forms a blood-red color with carbonate of ammonia (hence its name), and is slightly soluble in cold water and alcohol, more easily in boiling alcohol. Its salts explode when heated.