n. [ Pref. anti- + chlorine. ] (Chem.) Any substance (but especially sodium hyposulphite) used in removing the excess of chlorine left in paper pulp or stuffs after bleaching. [ 1913 Webster ]

n. [ Aurum + chloride. ] (Chem.) The trichloride of gold combination with the chloride of another metal, forming a double chloride; -- called also chloraurate. [ 1913 Webster ]

n. [ Pref. bi- + chloride. ] (Chem.) A compound consisting of two atoms of chlorine with one or more atoms of another element; -- called also dichloride. [ 1913 Webster ]

Bichloride of mercury, mercuric chloride; -- sometimes called corrosive sublimate. [ 1913 Webster ]

n. [ Chlorine + alcohol. ] 1. (Chem.) A colorless oily liquid, CCl3.CHO, of a pungent odor and harsh taste, obtained by the action of chlorine upon ordinary or ethyl alcohol. [ 1913 Webster ]

2. (Med.) Chloral hydrate. [ 1913 Webster ]

n. [ Chloral + amide. ] (Chem.) A compound of chloral and formic amide used to produce sleep. [ 1913 Webster ]

n. 1. a chemical substance (CCl3.CH(OH)2) which is a hydrate of trichloroacetaldehyde. It crystallizes as white monoclinic plates, obtained by treating chloral with water. It produces sleep when taken internally or hypodermically, and is used in medicine as a hypnotic and sedative; -- called also chloral It may be habit-forming, and is a controlled substance listed in the U. S. Code of Federal Regulations. It is sometimes used to render a person unconscious for illegal or nefarious purposes, and in this use, a concentrated solution is one of the agents called knockout drops. [ PJC ]

n. (Med.) A morbid condition of the system resulting from excessive use of chloral. [ 1913 Webster ]

n. [ Chlorine + aluminium. ] An impure aqueous solution of chloride of aluminium, used as an antiseptic and disinfectant. [ 1913 Webster ]

n. [ Chlorine + aniline. ] (Chem.) A yellow crystalline substance, C6Cl4.O2, regarded as a derivative of quinone, obtained by the action of chlorine on certain benzene derivatives, as aniline. [ 1913 Webster ]

n. [ Cf. F. chlorate. See Chlorine. ] (Chem.) A salt of chloric acid; as, chlorate of potassium. [ 1913 Webster ]

n. [ Chlorine + aurate. ] (Chem.) See Aurochloride. [ 1913 Webster ]

a. [ Chlorine + hydrogen + -ic. ] (Chem.) Same as Hydrochloric. [ 1913 Webster ]

n. (Chem.) One of a class of compounds formed from certain polybasic alcohols (and especially glycerin) by the substitution of chlorine for one or more hydroxyl groups. [ 1913 Webster ]

a. [ From Chlorine. ] Pertaining to, or obtained from, chlorine; -- said of those compounds of chlorine in which this element has a valence of five, or the next to its highest; as, chloric acid, HClO3. [ 1913 Webster ]

Chloric ether (Chem.), ethylene dichloride. See Dutch liquid, under Dutch. [ 1913 Webster ]

v. t. To treat or prepare with a chloride, as a plate with chloride of silver, for the purposes of photography. R. Hunt. [ 1913 Webster ]

n. (Chem.) A binary compound of chlorine with another element or radical; as, chloride of sodium (common salt). [ 1913 Webster ]

Chloride of ammonium, sal ammoniac. --
Chloride of lime, bleaching powder; a grayish white substance, CaOCl2, used in bleaching and disinfecting; -- called more properly calcium hypochlorite. See Hypochlorous acid, under Hypochlorous. --
Mercuric chloride, corrosive sublimate. [ 1913 Webster ]

a. Of or pertaining to a chloride; containing a chloride. [ 1913 Webster ]

v. t. See Chloridate. [ 1913 Webster ]

n. See Chlorometry. [ 1913 Webster ]

v. t. [ imp. & p. p. Chlorinated p. pr. & vb. n. Chlorinating. ] (Chem.) To treat, or cause to combine, with chlorine. [ 1913 Webster ]

n. The act or process of subjecting anything to the action of chlorine; especially, a process for the extraction of gold by exposure of the auriferous material to chlorine gas. [ 1913 Webster ]

n. [ Gr. &unr_; pale green, greenish yellow. So named from its color. See Yellow. ] (Chem.) One of the elementary substances, commonly isolated as a greenish yellow gas, two and one half times as heavy as air, of an intensely disagreeable suffocating odor, and exceedingly poisonous. It is abundant in nature, the most important compound being common salt (Sodium chloride). It is powerful oxidizing, bleaching, and disinfecting agent. Symbol Cl. Atomic weight, 35.4. [ 1913 Webster ]

Chlorine family, the elements fluorine, chlorine, bromine, and iodine, called the halogens, and classed together from their common peculiarities. [ 1913 Webster ]

a. Compounded of chlorine and iodine; containing chlorine and iodine. [ 1913 Webster ]

n. A compound of chlorine and iodine. [ R. ] [ 1913 Webster ]

n. [ Gr. &unr_; (sc. &unr_;), fr. chlwro`s light green. ] (Min.) The name of a group of minerals, usually of a green color and micaceous to granular in structure. They are hydrous silicates of alumina, iron, and magnesia. [ 1913 Webster ]

Chlorite slate, a schistose or slaty rock consisting of alumina, iron, and magnesia. [ 1913 Webster ]

n. [ Chlorous + -ite. ] (Chem.) Any salt of chlorous acid; as, chlorite of sodium. [ 1913 Webster ]

a. [ From 1st Chlorite. ] Pertaining to, or containing, chlorite; as, chloritic sand. [ 1913 Webster ]

n. (Chem.) A colorless gas, CH3Cl, of a sweet odor, easily condensed to a liquid; -- called also methyl chloride. [ 1913 Webster ]

(Chem.) A prefix denoting that chlorine is an ingredient in the substance named. [ 1913 Webster ]

n. [ Gr. chlwro`s light green + E. cruorin. ] (Physiol.) A green substance, supposed to be the cause of the green color of the blood in some species of worms. Ray Lankester. [ 1913 Webster ]

n. [ From chlorine, in imitation of anodyne. ] (Med.) A patent anodyne medicine, containing opium, chloroform, Indian hemp, etc. [ 1913 Webster ]

n. [ Chlorine + formyl, it having been regarded as a trichloride of this radical: cf. F. chloroforme, G. chloroform. ] (Chem.) A colorless volatile liquid, CHCl3, having an ethereal odor and a sweetish taste, formed by treating alcohol with chlorine and an alkali. It is a powerful solvent of wax, resin, etc., and is extensively used to produce anæsthesia in surgical operations; also externally, to alleviate pain. [ 1913 Webster ]

v. t. [ imp. & p. p. Chloroformed p. pr. & vb. n. Chloroforming. ] To treat with chloroform, or to place under its influence. [ 1913 Webster ]

n. [ Gr. chlwro`s light green + E. leucite. ] (Bot.) Same as Chloroplastid. [ 1913 Webster ]

n. [ Cf. F. chloromètre. See Chlorine, and -meter. ] An instrument to test the decoloring or bleaching power of chloride of lime. [ 1913 Webster ]

n. The process of testing the bleaching power of any combination of chlorine. [ 1913 Webster ]

n. [ Gr. chlwro`s light green + E. opal. ] (Min.) A massive mineral, greenish in color, and opal-like in appearance. It is essentially a hydrous silicate of iron. [ 1913 Webster ]

a. [ Chlorine + peptic. ] (Physiol. Chem.) Of or pertaining to an acid more generally called pepsin-hydrochloric acid. [ 1913 Webster ]

n. [ Gr. chlwro`s light green + &unr_; to show: cf. F. chlorophane. ] 1. (Min.) A variety of fluor spar, which, when heated, gives a beautiful emerald green light. [ 1913 Webster ]

2. (Physiol.) The yellowish green pigment in the inner segment of the cones of the retina. See Chromophane. [ 1913 Webster ]

n. [ Gr. chlwro`s light green + fy`llon leaf: cf. F. chlorophylle. ] 1. (Bot.) Literally, leaf green; a green granular matter formed in the cells of the leaves (and other parts exposed to light) of plants, to which they owe their green color, and through which all ordinary assimilation of plant food takes place. Similar chlorophyll granules have been found in the tissues of the lower animals. [ Written also chlorophyl. ] [ 1913 Webster ]

2. any of a group of green pigments found in photosynthetic organisms. Chlorophyll a and chlorophyll b are found in higher plants and green algae; chlorophyll c is found in certain types of marine algae. Chemically, it has a porphyrin ring with a magnesium ion bound to the four central nitrogens, and has a phytyl side chain. It is essential for photosynthesis in most plants. Chlorophyll a has formula C55H72N4O5Mg.
Syn. -- chlorophyll. [ WordNet 1.5 ]

n. [ Pref. chloro- + Gr. &unr_; to mold, form. ] (Biol.) A plastid containing chlorophyll, developed only in cells exposed to the light. Chloroplasts are minute flattened granules, usually occurring in great numbers in the cytoplasm near the cell wall, and consist of a colorless ground substance saturated with chlorophyll pigments. Under light of varying intensity they exhibit phototactic movements. In animals chloroplasts occur only in certain low forms. [ Webster 1913 Suppl. ]

n. [ Gr. chlwro`s light green + E. plastid. ] (Bot.) A granule of chlorophyll; -- also called chloroleucite. [ 1913 Webster ]

a. (Chem.) See Platinichloric. [ 1913 Webster ]

‖n. [ NL., fr. Gr. chlwro`s light green: cf. F. chlorose. ] 1. (Med.) The green sickness; an anæmic disease of young women, characterized by a greenish or grayish yellow hue of the skin, weakness, palpitation, etc. [ 1913 Webster ]

2. (Bot.) A disease in plants, causing the flowers to turn green or the leaves to lose their normal green color. [ 1913 Webster ]

a. [ Cf. F. chlorotique. ] Pertaining to, or affected by, chlorosis. [ 1913 Webster ]

a. [ See Chlorine. ] 1. Of, pertaining to, or derived from, chlorine; -- said of those compounds of chlorine in which this element has a valence of three, the next lower than in chloric compounds; as, chlorous acid, HClO2. [ 1913 Webster ]

2. (Chem. Physics) Pertaining to, or resembling, the electro-negative character of chlorine; hence, electro-negative; -- opposed to basylous or zincous. [ Obs. ] [ 1913 Webster ]

n. a genus of deciduous trees of India and Sri Lanka.
Syn. -- genus Chloroxylon. [ WordNet 1.5 ]

n. (Chem.) A heavy, colorless liquid, CCl3.NO2, of a strong pungent odor, obtained by subjecting picric acid to the action of chlorine. [ Written also chloropikrin. ] [ 1913 Webster ]

n. a drug derived from phenothiazine and used as a sedative and tranquilizer. [ WordNet 1.5 ]

n. a yellow crystalline antibacterial antibiotic used to treat certain bacterial and rickettsial diseases. Aureomycin is one common trademark for chlortetracycline.
Syn. -- Aureomycin. [ WordNet 1.5 ]