OCHRE

n. Ok'r1. Gr., uXPa- Lat., ochra. Fr., acre. Ger., Ocher, Ocker. A native mixture of argillaceous or calcareous earths with iron and manganese oxides. It varies in color with the proportion of iron contained in it and with the degree of oxidation of the iron, also sometimes through the application of heat. [B, 5 (a, 38).] French o. A yellow o. [B, 5 (a, 38).] Oxford o. O. of a brownish-yellow color but lighter than that of the Roman o. [B, 5 (a, 38).] Red o. Lat., ferrum haematites. Fr., ocre rouge. Bloodstone, a native variety of red iron oxide. [B. 119 (o, 38).] Roman o. A commercial o. of a brownish-yellow color which becomes of a purple-red under the influence of heat. [B. 5 (a, 38).] Stone o. Commercial o. in hard ma es. [B, 5 (a, 38).] Yellow o. Lat., ochra lutea. Fr.,ocrejaune. See IRON yellow. OCHRIASIS tt,at.). n. f. O2k(och2)-ri2-as(a3s)'i2s. Gen., -as'eos (-is). From o>xpa, ochre. Fr., ochriase. A sallow complexion. [L, 50, 57 (o, 14).j [s. 125]