pis to me site

[Gr. pistos =authentic, aud mesitēs a go-between.] Min .: A mineral belonging to the group of rhombohedral carbonates. Hardne , 3.5-4; specific gravity, 3412-3-427; luster, vitreous, sometimes pearly; color, yellowish-white to gray. Composition: Carbonate of magnesia, 42; carbonate of iron, 58=100, which is represented by the formula, MgOCO2 + FeOCO2. Intermediate between magnesite and siderite. (See these words.) pis-ton, s . [Fr.=a pestle. a piston, from Ital. pistone a piston; pestone =a pestle, from pest are = to pound, from Low Lat. pis to , from Lat. pistus , pa. par. of pin so , piso to pound; Sp.piston .] [PESTLE.] Mach .: A device so fitted as to occupy the sec Bot.: A channel which pa es from the stigma tional area of a tube and be capable of reciproca through the style into the ovary.