*oxide*

n. [ Carbon + oxide. ] (Chem.) A compound of carbon and oxygen, as carbonyl, with some element or radical; as, potassium carboxide. [ 1913 Webster ]

Potassium carboxide, a grayish explosive crystalline compound, C6O6K, obtained by passing carbon monoxide over heated potassium. [ 1913 Webster ]

n. [ Pref. deut- + oxide. ] (Chem.) A compound containing in the molecule two atoms of oxygen united with some other element or radical; -- usually called dioxide, or less frequently, binoxide. [ 1913 Webster ]

n. (Chem.) Same as Dioxide. [ 1913 Webster ]

n. [ Pref. di- + oxide. ] (Chem.) (a) An oxide containing two atoms of oxygen in each molecule; binoxide. (b) An oxide containing but one atom or equivalent of oxygen to two of a metal; a suboxide. [ Obs. ] [ 1913 Webster ]

Carbon dioxide. See Carbonic acid, under Carbonic. [ 1913 Webster ]

n. [ Hydro-, 2 + oxide. ] (Chem.) A hydrate; a substance containing hydrogen and oxygen, made by combining water with an oxide, and yielding water by elimination. The hydroxides are regarded as compounds of hydroxyl, united usually with basic element or radical; as, calcium hydroxide ethyl hydroxide. [ 1913 Webster ]

n. (Chem.) A compound having a relatively large percentage of oxygen; a peroxide. [ Obs. ]

n. (Chem.) Any of the oxides of iron, especially ferric oxide. [ PJC ]

n. (Chem.) A slightly alkaline chemical substance, Mg(OH)2, the active principle in the antacid milk of magnesia, also used as a laxative. [ WordNet 1.5 ]

n. (Chem.) Magnesia. [ WordNet 1.5 ]

n. [ Mon- + oxide. ] (Chem.) An oxide containing one atom of oxygen in each molecule; as, barium monoxide. [ 1913 Webster ]

n. [ F. oxygène oxygen + acide acid: cf. F. oxyde. The French word was correctly spelt oxide, till about the year 1840, when, in ignorance or forgetfulness of the true history and composition of the word, the orthography was change to make it represent the υ of Gr. 'oxy`s, from which it was supposed to be directly derived. ] (Chem.) A binary compound of oxygen with an atom or radical, or a compound which is regarded as binary; as, iron oxide, ethyl oxide, nitrogen oxide, etc. [ 1913 Webster ]

☞ In the chemical nomenclature adopted by Guyton de Morveau, Lavoisier, and their associates, the term oxides was made to include all compounds of oxygen which had no acid (F. acide) properties, as contrasted with the acids, all of which were at that time supposed to contain oxygen. The orthography oxyde, oxyd, etc., was afterwards introduced in ignorance or disregard of the true etymology, but these forms are now obsolete in English. The spelling oxid is not common. [ 1913 Webster ]

‖n. [ NL. ] (Paleon.) A genus of large trilobites characteristic of the primordial formations. [ 1913 Webster ]

n. [ Penta- + oxide. ] (Chem.) An oxide containing five atoms of oxygen in each molecule; as, phosphorus pentoxide, P2O5. [ 1913 Webster ]

n. (Chem.) An oxide containing more oxygen than some other oxide of the same element. Formerly peroxides were regarded as the highest oxides. Cf. Per-, 2. [ 1913 Webster ]

n. [ Proto- + oxide: cf. F. protoxide. ] (Chem.) That one of a series of oxides having the lowest proportion of oxygen. See Proto-, 2 (b). [ 1913 Webster ]

protoxide of nitrogen, laughing gas, now called hyponitrous oxide. See under Laughing. [ 1913 Webster ]

n. [ Quadri- + oxide. ] (Chem.) A tetroxide. [ R. ] [ 1913 Webster ]

n. [ Sesqui- + oxide. ] (Chem.) An oxide containing three atoms of oxygen with two atoms (or radicals) of some other substance; thus, alumina, Al2O3 is a sesquioxide. [ 1913 Webster ]

n. (Chem.) An oxide containing a relatively small amount of oxygen, and less than the normal proportion; as, potassium suboxide, K4O. [ 1913 Webster ]

n. (Chem.) See Peroxide. [ Obs. ] [ 1913 Webster ]

n. [ Cf. F. suroxyde. See Sur-, and Oxide. ] (Chem.) A peroxide. [ Obs. ] [ 1913 Webster ]

n. [ Tetra- + oxide. ] (Chem.) An oxide having four atoms of oxygen in the molecule; a quadroxide; as, osmium tetroxide, OsO4. [ 1913 Webster ]