<B>chrom-,</B><DL COMPACT><DD> (combining form.) the form of <B>chromo-</B> before vowels, as in <I>chrominance.</I> </DL>
<A NAME="chroma">
<B>chroma, </B>noun.<DL COMPACT><DD> saturation and hue considered together as a quality of color; the degree of a color's freedom from white, gray, or black. <BR> <I>Ex. If you mixed steps of color between a pure red and a neutral gray of the same value, or lightness, you would have a series of chromas (Faber Birren).</I> </DL>
<A NAME="chromaffin">
<B>chromaffin, </B>adjective.<DL COMPACT><DD><B> 1. </B>having an affinity for salts of chromic acid. <DD><B> 2. </B>of or having to do with certain pigmented cells in the medulla of a suprarenal gland. <BR> <I>Ex. chromaffin tissue.</I> </DL>
<A NAME="chromaffine">
<B>chromaffine, </B>adjective. =chromaffin.</DL>
<A NAME="chromalize">
<B>chromalize, </B>transitive verb, <B>-lized,</B> <B>-lizing.</B><DL COMPACT><DD> to metalize with a substance containing chromium. </DL>
<A NAME="chromat">
<B>chromat-,</B><DL COMPACT><DD> (combining form) the form of <B>chromato-</B> before vowels, as in <I>chromatin.</I> </DL>
<A NAME="chromate">
<B>chromate, </B>noun, verb, <B>-mated,</B> <B>-mating.</B><DL COMPACT><DD> (Chemistry.) <DD><I>noun </I> a salt or ester of chromic acid. <DD><I>v.t. </I> to treat with a chromate. </DL>
<A NAME="chromatic">
<B>chromatic, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> <B>1a. </B>of color or colors. <BR> <I>Ex. Most paint stores have chromatic charts.</I> <DD><B> b. </B>of or having to do with chroma. <BR> <I>Ex. chromatic color.</I> <DD><B> 2a. </B>progressing only by half steps instead of by the regular intervals of the musical scale. <BR> <I>Ex. There are twelve chromatic tones.</I> <DD><B> b. </B>having to do with or involving the use of tones which do not belong to a particular key or musical scale. <DD><B> c. </B>of tones which are marked with accidentals, are not normal to the scale in which they occur, but do not cause modulation. <DD><I>noun </I> (Music.) <B>=accidental.</B> adv. <B>chromatically.</B> </DL>
<A NAME="chromaticaberration">
<B>chromatic aberration,</B><DL COMPACT><DD> (Optics.) failure of the different colors of light to meet in one focus when refracted through a convex lens, resulting in a prismatic coloring around the edge of the image; chromatism. <BR> <I>Ex. An objective should be as free as possible from chromatic aberration, which causes colors to form around a brilliant object (Bernhard, Bennett, and Rice).</I> </DL>
<A NAME="chromaticism">
<B>chromaticism, </B>noun.<DL COMPACT><DD> the use of tones of a chromatic musical scale. </DL>
<A NAME="chromaticity">
<B>chromaticity, </B>noun.<DL COMPACT><DD> the state, degree, or quality of being chromatic; chroma. </DL>
<A NAME="chromaticness">
<B>chromaticness, </B>noun. =chromaticity.</DL>
<A NAME="chromatics">
<B>chromatics, </B>noun.<DL COMPACT><DD><B> 1. </B>the science that deals with colors. <DD><B> 2. </B>the branch of colorimetry dealing with hue and saturation. </DL>
<A NAME="chromaticscale">
<B>chromatic scale,</B><DL COMPACT><DD> a musical scale that progresses by half steps within the octave. </DL>
<A NAME="chromatid">
<B>chromatid, </B>noun.<DL COMPACT><DD> (Biology.) one of the two identical longitudinal halves into which a chromosome divides during cell division, which in turn develops into a complete new chromosome. </DL>
<A NAME="chromatin">
<B>chromatin, </B>noun.<DL COMPACT><DD><B> 1. </B>a protein substance in the nucleus of an animal or plant cell; chromoplasm. The chromosomes are made up in part of chromatin. It consists of granules or threads of deoxyribonucleic acid and protein, absorbs basic stains readily, and draws together to form chromosomes during mitosis. <DD><B> 2. </B>sex chromatin; Barr body. <BR> <I>Ex. A cell component called chromatin is found in the nucleus of female cells but not in that of male cells (Science News Letter).</I> </DL>
<A NAME="chromatinic">
<B>chromatinic, </B>adjective.<DL COMPACT><DD> of or having to do with chromatin. </DL>
<B>chromatist, </B>noun.<DL COMPACT><DD> a person who studies chromatics. </DL>
<A NAME="chromato">
<B>chromato-,</B><DL COMPACT><DD> (combining form.) <DD><B> 1. </B>color or the pigment producing it. <BR> <I>Ex. Chromatology</I> <DD> <B>=the science of color.</B> <DD><B> 2. </B>chromatin. <BR> <I>Ex. Chromatolysis</I> <DD> <B>=the disappearance of chromatin.</B> Also, <B>chromat-</B> before vowels. </DL>
<A NAME="chromatogram">
<B>chromatogram, </B>noun.<DL COMPACT><DD> the pattern of separate sections on the adsorbent in chromatography. <BR> <I>Ex. The mushrooms are minced, and after alcohol extraction and evaporation, a chromatogram on filter paper is prepared from the residue (Science News Letter).</I> </DL>
<A NAME="chromatograph">
<B>chromatograph, </B>noun, verb.<DL COMPACT><DD><I>noun </I> an instrument for analyzing mixtures by chromatography. <DD><I>v.t. </I> to analyze or represent by using chromatography. </DL>
<A NAME="chromatographer">
<B>chromatographer, </B>noun.<DL COMPACT><DD> a person skilled in chromatography. </DL>
<A NAME="chromatographic">
<B>chromatographic, </B>adjective.<DL COMPACT><DD> having to do with chromatography. adv. <B>chromatographically.</B> </DL>
<A NAME="chromatography">
<B>chromatography, </B>noun.<DL COMPACT><DD> the separation and analysis of mixtures of chemical compounds by the use of an adsorbing material, so that the different compounds become adsorbed in separate sections. <BR> <I>Ex. The amounts and kinds [of amino acids] in the stomach juices of the patients and normal persons after fasting were determined by paper-partition chromatography (Science News Letter).</I> </DL>
<A NAME="chromatology">
<B>chromatology, </B>noun.<DL COMPACT><DD> the science of colors; chromatics. </DL>
<A NAME="chromatolysis">
<B>chromatolysis, </B>noun.<DL COMPACT><DD> the breakup and destruction of chromatin in a cell nucleus. </DL>
<A NAME="chromatolytic">
<B>chromatolytic, </B>adjective.<DL COMPACT><DD> having to do with or causing chromatolysis. </DL>
<A NAME="chromatophore">
<B>chromatophore, </B>noun.<DL COMPACT><DD><B> 1. </B>one of the specialized pigment-bearing bodies in the cells of plants, especially of algae, such as a chloroplast or chromoplast. <DD><B> 2. </B>a pigment cell able to produce rapid color change in the skin of certain animals by its contraction or expansion, for example in a cuttlefish or a chameleon. </DL>
<A NAME="chromatophoric">
<B>chromatophoric, </B>adjective.<DL COMPACT><DD> having to do with or containing chromatophores. </DL>
<A NAME="chromatoplasm">
<B>chromatoplasm, </B>noun.<DL COMPACT><DD> the colored portions of protoplasm; the pigment substance of cells. </DL>
<A NAME="chromatoscope">
<B>chromatoscope, </B>noun.<DL COMPACT><DD> a device for compounding colors by combining light rays of different colors. </DL>
<A NAME="chromatrope">
<B>chromatrope, </B>noun.<DL COMPACT><DD><B> 1. </B>an arrangement in a magic lantern, stereopticon, or other light projector for producing effects similar to those of a kaleidoscope. <DD><B> 2. </B>a device consisting of a disk on which circular arcs of bright colors are so placed that when the disk is revolved rapidly streams of color seem to flow to or from the center. </DL>
<A NAME="chromatype">
<B>chromatype, </B>noun.<DL COMPACT><DD> (Photography.) <DD><B> 1. </B>a picture made upon paper sensitized with bichromate of potassium or some other salt of chromium. <DD><B> 2. </B>the process of making such pictures. </DL>
<A NAME="chrome">
<B>chrome, </B>noun, verb, <B>chromed,</B> <B>chroming.</B><DL COMPACT><DD><I>noun </I> <B>1. </B><B>=chromium.</B> <DD><B> 2a. </B>the name given to several different paint pigments, such as chrome yellow. <DD><B> b. </B>(Dyeing.) potassium or sodium dichromate. <DD><B> 3. </B><B>=chrome steel.</B> <DD><I>v.t. </I> <B>1. </B>to cover or plate with chrome. <BR> <I>Ex. chromed steel.</I> <DD><B> 2. </B>(Dyeing.) to treat with a solution of potassium or sodium dichromate. </DL>
<A NAME="chromealum">
<B>chrome alum,</B><DL COMPACT><DD> (Chemistry.) an alum containing trivalent chromium, such as a violet crystalline compound, ammonium chromic sulfate, used as a mordant, or a violet-red crystalline compound, potassium chromic sulfate, also used as a mordant. </DL>
<A NAME="chromegreen">
<B>chrome green,</B><DL COMPACT><DD> any one of several green pigments containing chromium, used in paints and dyes and in textile printing. The chrome greens consist chiefly of chromic oxide. </DL>
<A NAME="chromeiron">
<B>chrome iron</B> or <B>chrome iron ore,</B> <B>=chromite </B>(def. 1).</DL>
<A NAME="chromeleather">
<B>chrome leather,</B><DL COMPACT><DD> leather tanned with salts of chromium. </DL>
<B>chrome red,</B><DL COMPACT><DD> any one of several bright-red pigments consisting of basic lead chromate. <BR> <I>Ex. A red pigment known as chrome red may be prepared by boiling chrome yellow with a dilute alkali (W. N. Jones).</I> </DL>
<A NAME="chromesteel">
<B>chrome steel,</B><DL COMPACT><DD> a very hard, strong steel containing chromium; chromium steel. </DL>
<A NAME="chrometanning">
<B>chrome tanning,</B><DL COMPACT><DD> a method of tanning leather by treating it with a solution of chromium salt, such as potassium dichromate. </DL>
<A NAME="chromeyellow">
<B>chrome yellow,</B><DL COMPACT><DD> a yellow coloring matter made from neutral lead chromate, or sometimes from zinc chromate or barium chromate, and used in some yellow paints. </DL>
<A NAME="chromic">
<B>chromic, </B>adjective.<DL COMPACT><DD> (Chemistry.) <DD><B> 1. </B>of chromium. <DD><B> 2. </B>containing chromium, especially with a valence of 3. </DL>
<A NAME="chromicacid">
<B>chromic acid,</B><DL COMPACT><DD> an acid occurring only in solutions or in the form of its salts (chromates). </DL>
<A NAME="chromidrosis">
<B>chromidrosis, </B>noun.<DL COMPACT><DD> the secretion of colored sweat. </DL>
<A NAME="chrominance">
<B>chrominance, </B>noun.<DL COMPACT><DD> the difference between any color and a reference color of equal light intensity, used as a colorimetric unit in transmitting hue and saturation signals in color television. <BR> <I>Ex. Colour information is supplied to the television receiver by a chrominance signal (New Scientist).</I> </DL>
