Webster's Dictionary, 1913

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Chromatically adverb In a chromatic manner.

Chromatics noun The science of colors; that part of optics which treats of the properties of colors.

Chromatin noun [ Greek ..., ..., color.] (Biol.) Tissue which is capable of being stained by dyes.

Chromatin noun (Biol.) The deeply staining substance of the nucleus and chromosomes of cells, now supposed to be the physical basis of inheritance, and generally regarded as the same substance as the hypothetical idioplasm or germ plasm.

Chromatism noun [ Greek ... a coloring.]


1. (Optics) The state of being colored, as in the case of images formed by a lens.

2. (Botany) An abnormal coloring of plants.

Chromatogenous adjective [ Greek ..., ..., color + -genous .] Producing color.

Chromatography noun [ Greek ..., ..., color + -graphy .] A treatise on colors

Chromatology noun [ Greek ..., ..., color + -logy .] A treatise on colors.

Chromatophore noun [ Greek ..., ..., color + ... to bear.]
1. (Zoology) A contractile cell or vesicle containing liquid pigment and capable of changing its form or size, thus causing changes of color in the translucent skin of such animals as possess them. They are highly developed and numerous in the cephalopods.

2. (Botany) One of the granules of protoplasm, which in mass give color to the part of the plant containing them.

Chromatoscope noun [ Greek ..., ..., color + -scope .] (Astron.) A reflecting telescope, part of which is made to rotate eccentrically, so as to produce a ringlike image of a star, instead of a point; -- used in studying the scintillation of the stars.

Chromatosphere noun A chromosphere. [ R.]

Chromatrope noun [ Greek ... color + ... turn, rotation, ... to turn.]
1. (Physics) An instrument for exhibiting certain chromatic effects of light (depending upon the persistence of vision and mixture of colors) by means of rapidly rotating disks variously colored.

2. A device in a magic lantern or stereopticon to produce kaleidoscopic effects.

Chromatype noun [ Greek ... color + ... type.]


1. (Photog.) A colored photographic picture taken upon paper made sensitive with potassium bichromate or some other salt of chromium.

2. The process by which such picture is made.

Chrome noun Same as Chromium .

Chrome alum (Chemistry) , a dark violet substance, (SO 4 ) 3 Cr 2 . K 2 SO 4 . 24 H 2 O, analogous to, and crystallizing like, common alum. It is regarded as a double sulphate of chromium and potassium. -- Chrome green (a) The green oxide of chromium, Cr 2 O 3 , used in enamel painting, and glass staining. (b) A pigment made by mixing chrome yellow with Prussian blue. -- Chrome red , a beautiful red pigment originally prepared from the basic chromate of lead, but now made from red oxide of lead. -- Chrome yellow , a brilliant yellow pigment, PbCrO 4 , used by painters.

Chrome transitive verb [ imperfect & past participle Chromed ; present participle & verbal noun Chroming .] [ From Chrome , noun ] To treat with a solution of potassium bichromate, as in dyeing.

Chrome steel Same as Chromium steel , under Steel .

Chromic adjective (Chemistry) Pertaining to, or obtained from, chromium; -- said of the compounds of chromium in which it has its higher valence.

Chromic acid , an acid, H 2 CrO 4 , analogous to sulphuric acid, not readily obtained in the free state, but forming well known salts, many of which are colored pigments, as chrome yellow, chrome red, etc. -- Chromic anhydride , a brilliant red crystalline substance, CrO 3 , regarded as the anhydride of chromic acid. It is one of the most powerful oxidizers known.

Chromid noun [ Greek ... a kind of fish.] (Zoology) One of the Chromidæ , a family of fresh-water fishes abundant in the tropical parts of America and Africa. Some are valuable food fishes, as the bulti of the Nile.

Chromidrosis noun [ New Latin , from Greek ... color + ... sweat.] (Medicine) Secretion of abnormally colored perspiration.

Chromism noun Same as Chromatism .

Chromite noun
1. (Min.) A black submetallic mineral consisting of oxide of chromium and iron; -- called also chromic iron .

2. (Chemistry) A compound or salt of chromous hydroxide regarded as an acid. [ R.]

Chromium noun [ New Latin , from Greek ... color.] (Chemistry) A comparatively rare element occurring most abundantly in the mineral chromite. Atomic weight 52.5. Symbol Cr. When isolated it is a hard, brittle, grayish white metal, fusible with difficulty. Its chief commercial importance is for its compounds, as potassium chromate, lead chromate, etc., which are brilliantly colored and are used dyeing and calico printing. Called also chrome .

Chromo noun ; plural Chromos . [ Abbrev. from chromo lithograph.] A chromolithograph.

Chromoblast noun [ Greek ... color + -blast .] An embryonic cell which develops into a pigment cell.

Chromogen [ Greek ... color + -gen .]


1. (Biol.) Vegetable coloring matter other than green; chromule.

2. (Chemistry) Any colored compound, supposed to contain one or more chromophores.

Chromogenic adjective (Biol.) Containing, or capable of forming, chromogen; as, chromogenic bacteria.

Chromograph noun [ Greek ... color + -graph .] An apparatus by which a number of copies of written matter, maps, plans, etc., can be made; -- called also hectograph .

Chromoleucite noun [ Greek ... color + English leucite .] (Botany) A chromoplastid.

Chromolithograph noun [ Greek ... color + English lithograph .] A picture printed in tints and colors by repeated impressions from a series of stones prepared by the lithographic process.

Chromolithographer noun One who is engaged in chromolithography.

Chromolithographic adjective Pertaining to, or made by, chromolithography.

Chromolithography noun Lithography adapted to printing in inks of various colors.

Chromophane noun [ Greek ... color + ... to show.] (Physiol.) A general name for the several coloring matters, red, green, yellow, etc., present in the inner segments in the cones of the retina, held in solution by fats, and slowly decolorized by light; distinct from the photochemical pigments of the rods of the retina.

Chromophore noun [ Greek ... color + ... to bear.] (Chemistry) Any chemical group or residue (as NO 2 ; N 2 ; or O 2 ) which imparts some decided color to the compound of which it is an ingredient.

Chromophotograph noun [ Greek ... color + photograph .] A picture made by any of the processes for reproducing photographs in colors. -- Chro`mo*pho`to*graph"ic adjective

Chromophotography noun [ Greek ... color + English photography .] The art of producing photographs in colors.

Chromophotolithograph noun A photolithograph printed in colors.

Chromoplastid noun [ Greek ... + English plastid .] (Botany) A protoplasmic granule of some other color than green; -- also called chromoleucite .

Chromosome noun [ Greek ... color + ... the body.] (Biol.) One of the minute bodies into which the chromatin of the nucleus is resolved during mitotic cell division; the idant of Weismann.

Chromosphere noun [ Greek ... color + English sphere .] (Astron.) An atmosphere of rare matter, composed principally of incandescent hydrogen gas, surrounding the sun and enveloping the photosphere. Portions of the chromosphere are here and there thrown up into enormous tongues of flame.

Chromospheric adjective Of or pertaining to the chromosphere.

Chromotype noun [ Greek ... color + -type .]
1. A sheet printed in colors by any process, as a chromolithograph. See Chromolithograph .

2. A photographic picture in the natural colors.

Chromous adjective Of, pertaining to, or derived from, chromium, when this element has a valence lower than that in chromic compounds.

Chromous acid , a bluish gray powder, CrO.OH, of weak acid properties and regard as an acid.

Chromule noun [ Greek ... color + ... matter.] (Botany) A general name for coloring matter of plants other than chlorophyll, especially that of petals.

Chronic adjective [ Latin chronicus , Greek ... concerning time, from ... time: confer French chronique .]
1. Relating to time; according to time.

2. Continuing for a long time; lingering; habitual.

Chronic disease , one which is inveterate, of long continuance, or progresses slowly, in distinction from an acute disease, which speedly terminates.

Chronical adjective Chronic.

Partly on a chronical , and partly on a topical method.
J. A. Alexander.

Chronicle noun [ Middle English cronicle , from cronique , Old French cronique , French chronique , Latin chronica , from Greek ..., neut. plural of .... See Chronic .]
1. An historical register or account of facts or events disposed in the order of time.

2. A narrative of events; a history; a record.

3. plural The two canonical books of the Old Testament in which immediately follow 2 Kings.

Syn. - Register; record; annals. See History .

Chronicle transitive verb [ imperfect & past participle Chronicled ; present participle & verbal noun Chronicling .] To record in a history or chronicle; to record; to register. Shak.

Chronicler noun A writer of a chronicle; a recorder of events in the order of time; an historian.

Such an honest chronicler as Griffith.
Shak.

Chronique noun [ French See Chronicle .] A chronicle. Latin Addison.