OXIDE

(Yunanca köken — orijinale bakınız.) Compounds containing oxygen, hut which are not acid, have been termed oxides. The metallic oxides are a most important cla of bodies. To designate the different oxides of one base we generally use the first syllable of the Greek ordinal numerals, designating the first, second, third, &.C., oxides by the terms protoxide, deutoxide, tritoxide, .; and when the base is saturated with oxygen (still not acid) it is termed a peroxide,. Compounds of bases with one atom and a half oxygen, or of two base and three oxygen, are now general ly distinguished by the term sesquioxid.es. [s. 884]