prehnite

[After Oberst von Prehn, who first found it; suff.- ite ( Min.).] Min.: An orthorhombic mineral, occurring as thin tables, sometimes in barrel-shaped groups, also globular, and mammillated, with a crystalline surface and fibrous diverging structure. Hardne , 6-6.5; specific gravity, 2-8-2-953; luster, vitreous; color, various shades of green, yellow, sometimes gray or white; sub-transparent. Composition: Silica, 43-6; alumina, 24.9; lime, 27·1; water, 44= 100, corresponding with the formula, ((HO)3CaQ +Al2O3)2,3SiO2. Found in many places, though mostly in old igneous rocks, but occasionally in granite, gnei , . preh-nit-ic, a. [English prehnit (e); -ic.] Per taining to or derived from prehnite (q. v.). prehnitic-acid, s. Chem.: C10H6O8=C6H2(CO2H)4. A polybasic acid, obtained by heating hydro mellitic acid with five times its weight of concentrated sulphuric acid. It crystallizes in large grouped prisms; very soluble in water. When anhydrous it melts at 240°, and prejudicially A. Trans.: Τo prejudge; to determine beforehand to disadvantage. "Our dearest friend Prejudicates the busine ." Shakesp.: All's Well that Ends Well , i. 2. B. In trans.: To prejudge; to form a judgment without due examination of the facts. pre-ju-di-cate, a. [PREJUDICATE, v.] 1. Formed by prejudice; prejudged, prejudiced. "Casting away all our former prejudicate opinions."Watts: Logic , pt. ii., ch. iv. 2. Prejudiced, biased, prepo e ed. "Were not the angry world prejudicate ." Bp . Hall : Satires , vi. 1. pre-ju-di-cat-ěd, adj . [PREJUDICATE.) Prejudiced, biased. "Such being the froward disposition of prejudicated persons."- Prynne : Histrio - Mastix . (Epist. Ded.) pre-ju-di-cate-lý, adv. [English prejudicate; ly.] In a prejudiced' or biased manner; with prejudice or bias.