Webster's Dictionary, 1913

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Oxidizer noun (Chemistry) An agent employed in oxidation, or which facilitates or brings about combination with oxygen; as, nitric acid, chlorine, bromine, etc., are strong oxidizers .

Oxidulated adjective (Chemistry) Existing in the state of a protoxide; -- said of an oxide. [ R.]

Oxime noun (Chemistry) One of a series of isonitroso derivatives obtained by the action of hydroxylamine on aldehydes or ketones.

Oxindol noun [ Ox ygen + indol .] (Chemistry) A white crystalline nitrogenous substance (C 8 H 7 NO) of the indol group, obtained by the reduction of dioxindol. It is a so-called lactam compound.

Oxiodic adjective [ Ox y- ( a ) + iodic .] (Chemistry) Pertaining to, or designating, certain compounds of iodine and oxygen.

Oxlike adjective Characteristic of, or like, an ox.

Oxlip noun [ Anglo-Saxon oxanslyppe . See Ox , and Cowslip .] (Botany) The great cowslip ( Primula veris , var. elatior ).

Oxonate noun (Chemistry) A salt of oxonic acid.

Oxonian adjective Of or relating to the city or the university of Oxford, England. Macaulay.

Oxonian noun A student or graduate of Oxford University, in England.

Oxonic adjective [ Prob. gly ox alic + carb onic .] (Chemistry) Pertaining to, or designating, a complex nitrogenous acid (C 4 H 5 N 3 O 4 ) not known in the free state, but obtained, in combination with its salts, by a slow oxidation of uric acid, to which it is related.

Oxpecker noun (Zoology) An African bird of the genus Buphaga ; the beefeater.

Oxshoe noun A shoe for oxen, consisting of a flat piece of iron nailed to the hoof.

Oxter noun [ Anglo-Saxon ōhsta .] The armpit; also, the arm. [ Prov. Eng. & Scot.]

Oxtongue noun (Botany) A name given to several plants, from the shape and roughness of their leaves; as, Anchusa officinalis , a kind of bugloss, and Helminthia echioides , both European herbs.

Oxy- (Chemistry) A prefix, also used adjectively , designating: (a) A compound containing oxygen . (b) A compound containing the hydroxyl group , more properly designated by hydroxy- . See Hydroxy- .

Oxy acid . See Oxyacid (below).

Oxyacetic adjective [ Oxy- ( b ) + acetic .] Hydroxyacetic; designating an acid called also glycolic acid .

Oxyacid noun [ Oxy- (a) + acid .] (Chemistry) An acid containing oxygen, as chloric acid or sulphuric acid; -- contrasted with the hydracids , which contain no oxygen, as hydrochloric acid. See Acid , and Hydroxy- .

Oxyammonia noun [ Oxy- (b) + ammonia .] (Chemistry) Same as Hydroxylamine .

Oxybenzene noun [ Oxy- (b) + benzene .] (Chemistry) Hydroxy benzene. Same as Phenol .

Oxybenzoic adjective [ Oxy- (b) + benzoic .] (Chemistry) Hydroxybenzoic; pertaining to, or designating, any one of several hydroxyl derivatives of benzonic acid, of which the commonest is salicylic acid.

Oxybromic adjective [ Oxy- (a) + bromic .] (Chemistry) Pertaining to, or designating, certain compounds of oxygen and bromine.

Oxybutyric adjective [ Oxy- (b) + butyric .] (Chemistry) Hydroxybutyric; designating any one of a group of metameric acids (C 3 H 6 .OH.CO 2 H).

Oxycalcium adjective [ Oxy- (a) + calcium .] Of or pertaining to oxygen and calcium; as, the oxycalcium light. See Drummond light .

Oxycaproic adjective (Chemistry) See Leucic .

Oxychloric adjective [ Oxy- (a) + chloric .] (Chemistry) (a) Of, pertaining to, or designating in general, certain compounds containing oxygen and chlorine. (b) Formerly designating an acid now called perchloric acid . See Perchloric .

Oxychloride noun [ Oxy- (a) + chloride .] (Chemistry) A ternary compound of oxygen and chlorine; as, plumbic oxychloride .

Oxycrate noun [ Greek ...............;............ acid + ............ to mix: confer French oxycrat .] (med.) A Mixture of water and vinegar. Wiseman.

Oxycymene noun [ Oxy- (b) + cymene .] (Chemistry) Hydroxy cymene. Same as Carvacrol .

Oxygen noun [ French oxygène , from Greek ............ sharp, acid + root of ............ to be born. So called because originally supposed to be an essential part of every acid .]


1. (Chemistry) A colorless, tasteless, odorless, gaseous element occurring in the free state in the atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. Symbol O. Atomic weight 15.96.

» It occurs combined in immense quantities, forming eight ninths by weight of water, and probably one half by weight of the entire solid crust of the globe, being an ingredient of silica, the silicates, sulphates, carbonates, nitrates, etc. Oxygen combines with all elements (except fluorine), forming oxides, bases, oxyacid anhydrides, etc., the process in general being called oxidation , of which combustion is only an intense modification. At ordinary temperatures with most substances it is moderately active, but at higher temperatures it is one of the most violent and powerful chemical agents known. It is indispensable in respiration, and in general is the most universally active and efficient element. It may be prepared in the pure state by heating potassium chlorate.

This element (called dephlogisticated air by Priestley) was named oxygen by Lavoisier because he supposed it to be a constituent of all acids. This is not so in the case of a very few acids (as hydrochloric , hydrobromic , hydric sulphide , etc.), but these do contain elements analogous to oxygen in property and action. Moreover, the fact that most elements approach the nearer to acid qualities in proportion as they are combined with more oxygen, shows the great accuracy and breadth of Lavoisier's conception of its nature.

2. Chlorine used in bleaching. [ Manufacturing name]

Oxygenate transitive verb [ imperfect & past participle Oxygenated ; present participle & verbal noun Oxygenating .] [ Confer French oxygéner .] (Chemistry) To unite, or cause to combine, with oxygen; to treat with oxygen; to oxidize; as, oxygenated water (hydrogen dioxide).

Oxygenation noun [ Confer French oxygénation .] (Chemistry) The act or process of combining or of treating with oxygen; oxidation.

Oxygenator noun An oxidizer.

Oxygenic adjective (Chemistry) Pertaining to, containing, or resembling, oxygen; producing oxygen.

Oxygenium noun [ New Latin ] (Chemistry) The technical name of oxygen. [ R.]

Oxygenizable adjective (Chemistry) Oxidizable.

Oxygenize transitive verb [ imperfect & past participle Oxygenized ; p pr. & verbal noun Oxygenizing .] (Chemistry) To oxidize.

Oxygenizement noun Oxidation.

Oxygenous adjective Oxygenic.

Oxygon noun [ Greek ............ sharp + ......... an angle: confer French oxygone .] (Geom.) A triangle having three acute angles.

Oxygonal, Oxygonial adjective Having acute angles. Barlow.

Oxyhydrogen adjective [ Oxy- (a) + hydrogen .] (Chemistry) Of or pertaining to a mixture of oxygen and hydrogen; as, oxyhydrogen gas.

Oxyhydrogen blowpipe . (Chemistry) See Blowpipe . -- Oxyhydrogen microscope , a form of microscope arranged so as to use the light produced by burning lime or limestone under a current of oxyhydrogen gas.

Oxyhydrogen light A light produced by the incandescence of some substances, esp. lime, in the oxyhydrogen flame. Coal gas (producing the oxygas light ), or the vapor of ether ( oxyether light ) or methylated spirit ( oxyspirit light ), may be substituted for hydrogen.

OxYhæmacyanin, Oxyhæmocyanin noun [ Oxy- (a) + hæmacyanin , hæmocyanin .] (Physiol. Chem.) See Hæmacyanin .

Oxyhæmoglobin, Oxyhemoglobin noun [ Oxy- (a) + hæmoglobin , hemoglobin .] (Physiol. Chem.) See Hemoglobin .

Oxymel noun [ Latin oxymeli , Greek .........; ............ acid + ......... honey.] (Medicine) A mixture of honey, water, vinegar, and spice, boiled to a sirup. Sir T. Elyot.

Oxymethylene noun [ Oxy- (a) + methylene .] (Chemistry) Formic aldehyde, regarded as a methylene derivative.

Oxymoron noun [ New Latin , from Greek ........., from ......... pointedly foolish; ......... sharp + ......... foolish.] (Rhet.) A figure in which an epithet of a contrary signification is added to a word; e. g., cruel kindness ; laborious idleness .

Oxymuriate noun (Old Chem.) A salt of the supposed oxymuriatic acid; a chloride.

Oxymuriate of lime , chloride of lime.