<B>carbon knock,</B><DL COMPACT><DD> the sound caused by an improper burning of fuel due to accumulated carbon in an internal-combustion engine; knock. </DL>
<A NAME="carbonmicrophone">
<B>carbon microphone,</B><DL COMPACT><DD> a microphone in which an electric current passes through a package of carbon grains whose conductivity varies with its degree of compression. The transmitter in a telephone is a carbon microphone. </DL>
<A NAME="carbonmonoxide">
<B>carbon monoxide,</B><DL COMPACT><DD> a colorless, odorless, very poisonous gas formed when carbon burns with an insufficient supply of air. It is part of the exhaust gases of automobile engines. </DL>
<A NAME="carbonnade">
<B>carbonnade, </B>noun.<DL COMPACT><DD> a Flemish beef stew made with onions, brown sugar, and beer. </DL>
<A NAME="carbonpaper">
<B>carbon paper,</B><DL COMPACT><DD><B> 1. </B>thin paper having a preparation of carbon or other inky substance on one surface. It is used between sheets of paper to make a copy of what is written or typed on the upper sheet. <DD><B> 2. </B>paper that is used in the carbon process of photography. </DL>
<A NAME="carbonprocess">
<B>carbon process,</B><DL COMPACT><DD> a photographic process for producing permanent prints in black and white by the use of paper treated with carbon in gelatin. </DL>
<A NAME="carbonsteel">
<B>carbon steel,</B><DL COMPACT><DD> steel containing varying amounts of carbon and very small amounts of other alloying elements. </DL>
<A NAME="carbontax">
<B>carbon tax,</B><DL COMPACT><DD> a tax on fossil fuels that is based on the amount of carbon emitted when the fuel is burned. <BR> <I>Ex. A carbon tax would add roughly four cents to the price of coal for every penny it added to the price of oil (New York Times).</I> </DL>
<A NAME="carbontetrachloride">
<B>carbon tetrachloride,</B><DL COMPACT><DD> a colorless, poisonous liquid that does not burn, often used in fire extinguishers and in cleaning fluids, as a solvent, and in other ways. Its fumes are very dangerous if inhaled. </DL>
<A NAME="carbonyl">
<B>carbonyl, </B>noun.<DL COMPACT><DD><B> 1. </B>a bivalent radical occurring in aldehydes, ketones, and acids. <DD><B> 2. </B>any one of a group of compounds of carbon monoxide united with a metal, such as nickel carbonyl. </DL>
<A NAME="carbonylation">
<B>carbonylation, </B>noun.<DL COMPACT><DD> the introduction of a carbonyl group into a compound. </DL>
<A NAME="carbonylchloride">
<B>carbonyl chloride,</B> =phosgene.</DL>
<A NAME="carbonylic">
<B>carbonylic, </B>adjective.<DL COMPACT><DD> of or containing carbonyl. </DL>
<A NAME="carbora">
<B>carbora, </B>noun.<DL COMPACT><DD> a wood-burrowing worm of Australia which lives between high and low water in a tidal river. </DL>
<A NAME="carborane">
<B>carborane, </B>noun.<DL COMPACT><DD> any one of a class of compounds of carbon, boron, and hydrogen useful in the synthesis of polymers and lubricants. </DL>
<A NAME="carborne">
<B>carborne, </B>adjective.<DL COMPACT><DD><B> 1. </B>traveling by car. <BR> <I>Ex. the carborne public.</I> <DD><B> 2. </B>carried in a car. <BR> <I>Ex. a carborne radio transmitter.</I> </DL>
<A NAME="carborundum">
<B>Carborundum, </B>noun.<DL COMPACT><DD> (Trademark.) an extremely hard compound of carbon and silicon used for grinding, cutting, and polishing. </DL>
<A NAME="carboxyhemoglobin">
<B>carboxyhemoglobin, </B>noun.<DL COMPACT><DD> the compound formed in the blood when inhaled carbon monoxide combines with hemoglobin. </DL>
<A NAME="carboxyl">
<B>carboxyl, </B>noun.<DL COMPACT><DD> a univalent radical, -COOH, existing in many organic acids, the hydrogen being replaceable by a basic element or radical, forming a salt. </DL>
<A NAME="carboxylase">
<B>carboxylase, </B>noun.<DL COMPACT><DD> an enzyme, found in yeast, which removes carbon dioxide from the carboxyl group of amino acids. </DL>
<A NAME="carboxylate">
<B>carboxylate, </B>noun, verb, <B>-ated,</B> <B>-ating.</B><DL COMPACT><DD><I>noun </I> a salt or ester of carboxylic acid. <DD><I>v.t. </I> to introduce a carboxyl into (a compound). noun <B>carboxylation.</B> </DL>
<A NAME="carboxylic">
<B>carboxylic, </B>adjective.<DL COMPACT><DD> of or having to do with carboxyl; resembling carboxyl. </DL>
<A NAME="carboxylicacid">
<B>carboxylic acid,</B><DL COMPACT><DD> any organic acid containing the carboxyl group. </DL>
<A NAME="carboy">
<B>carboy, </B>noun.<DL COMPACT><DD> a very large glass bottle, usually enclosed in basketwork or in a wooden box or crate to keep it from being broken. It is chiefly used for holding acids and other corrosive liquids. </DL>
<A NAME="carbuncle">
<B>carbuncle, </B>noun.<DL COMPACT><DD><B> 1a. </B>a very painful, inflamed swelling under the skin. A carbuncle discharges pus like a boil but is a more deep-seated infection, has several openings, lacks a hard central core, and is more serious in its effects <DD><B> b. </B>a red spot or pimple. <DD><B> 2a. </B>a smooth, round garnet or other deep-red jewel. <DD><B> b. </B>a garnet cut to have a convex surface without facets. <DD><B> 3. </B>either of two colors: <DD><B> a. </B>a brownish red. <DD><B> b. </B>a deep red. </DL>
<A NAME="carbuncled">
<B>carbuncled, </B>adjective.<DL COMPACT><DD><B> 1. </B>affected with a carbuncle or carbuncles; spotted; pimpled. <DD><B> 2a. </B>red or shining like a carbuncle or garnet. <DD><B> b. </B>set or adorned with carbuncles or garnets. </DL>
<A NAME="carbuncular">
<B>carbuncular, </B>adjective.<DL COMPACT><DD> of or having to do with carbuncles. </DL>
<A NAME="carburant">
<B>carburant, </B>noun.<DL COMPACT><DD> a carbon compound, such as gasoline, used for carbureting with air or gas; carburetant. </DL>
<A NAME="carburation">
<B>carburation, </B>noun.<DL COMPACT><DD> the process of charging air with hydrocarbon, such as gasoline, in finely divided liquid form, the resulting gas being burned for the production of energy. </DL>
<A NAME="carburet">
<B>carburet, </B>verb, <B>-reted,</B> <B>-reting</B> or (especially British) <B>-retted,</B> <B>-retting,</B> noun.<DL COMPACT><DD><I>v.t. </I> <B>1. </B>to mix (air or gas) with carbon compounds, such as gasoline or benzine; carburize. <DD><B> 2. </B>to combine with carbon. <DD><I>noun </I> <B>=carbide.</B> noun <B>carburetion.</B> </DL>
<A NAME="carburetant">
<B>carburetant, </B>noun. =carburant.</DL>
<A NAME="carburetor">
<B>carburetor, </B>noun.<DL COMPACT><DD> a device for sending air through or over a liquid fuel to produce an explosive vapor for ignition in an internal-combustion engine. <BR> <I>Ex. A conventional carburetor has two barrels--a design growing more and more obsolete as the frenzied horsepower race continues in the industry at hot-rod proportions (Wall Street Journal).</I> </DL>
<B>carburize, </B>transitive verb, <B>-rized,</B> <B>-rizing.</B><DL COMPACT><DD><B> 1. </B>to combine (an element or substance) with carbon or a carbon compound, as in the conversion of iron into steel. <DD><B> 2. </B><B>=carburet.</B> noun <B>carburization.</B> noun <B>carburizer.</B> </DL>
<A NAME="carbylamine">
<B>carbylamine, </B>noun.<DL COMPACT><DD> any organic cyanide having a nauseating odor and containing the radical--N: C. </DL>
<A NAME="carcajou">
<B>carcajou, </B>noun. =wolverine.</DL>
<A NAME="carcake">
<B>carcake, </B>noun.<DL COMPACT><DD> a small cake baked on a griddle and eaten on Shrove Tuesday in parts of Scotland. </DL>
<A NAME="carcanet">
<B>carcanet, </B>noun.<DL COMPACT><DD> (Archaic.) an ornamental collar, necklace, or headband, of gold or jewels. </DL>
<A NAME="carcard">
<B>car card,</B><DL COMPACT><DD> a kind of advertising poster displayed on buses, trains, and other conveyances. </DL>
<B>carcass, </B>noun, verb.<DL COMPACT><DD><I>noun </I> <B>1a. </B>the dead body of an animal. <BR> <I>Ex. Steak is cut from a beef carcass. The numbers of rabbits also fluctuate with the seasons, as can be seen from figures for exports of carcasses and skins (Fenner and Day).</I> <DD><B> b. </B>(Informal.) a human body, dead or living (now usually in ridicule or humor). <DD><B> c. </B>the whole trunk of a butchered animal, after removal of the head, limbs, and offal. <DD><B> 2. </B>the shell or framework of a structure such as a building, ship, or piece of furniture. <DD><B> 3. </B>(Figurative.) the lifeless shell or husk of anything. <BR> <I>Ex. The carcass of the sacrament cannot give life; but the soul of it (Bishop Hall).</I> <DD><B> 4. </B>the inner, corded wall of the casing of a pneumatic tire. <DD><B> 5. </B>a kind of incendiary shell; fireball. <DD><I>v.t. </I> to erect or set up (the framework of a building, ship, or other structure). </DL>
<A NAME="carcel">
<B>carcel, </B>noun.<DL COMPACT><DD> a former French unit of illuminating power, based on the light emitted by a standard Carcel lamp. </DL>
<A NAME="carcellamp">
<B>Carcel lamp,</B><DL COMPACT><DD> a lamp in which the oil is fed to the wick by a pump operated by clockwork, used in lighthouses and for testing illuminating power. </DL>
<A NAME="carceplex">
<B>carceplex, </B>noun.<DL COMPACT><DD> a molecular complex consisting of a large molecule in which a smaller molecule has been chemically trapped. <BR> <I>Ex. A carceplex consists of ... a hollow "prison" molecule and a "guest" molecule trapped inside. These guest molecules ... exist in a state of matter different from the familiar states represented by solids, liquids, gases and electrically charged plasmas (New York Times).</I> . </DL>
<A NAME="carcerand">
<B>carcerand, </B>noun.<DL COMPACT><DD> a hollow molecule which encloses but does not bond to a smaller molecule. <BR> <I>Ex. Cram envisions using ... carcerands to shuttle drugs to diseased cells (Science News).</I> </DL>
<A NAME="carcharodon">
<B>carcharodon, </B>noun.<DL COMPACT><DD><B> 1. </B>a large maneating tropical shark with extremely sharp, triangular teeth; great white shark. <DD><B> 2. </B>any one of similar types of extinct fish that reached eighty feet in length. </DL>
<A NAME="carcharodont">
<B>carcharodont, </B>adjective.<DL COMPACT><DD> having sharp, triangular teeth as those of a carcharodon. </DL>
<A NAME="carcinogen">
<B>carcinogen, </B>noun.<DL COMPACT><DD> any substance or agent that produces or tends to produce cancer. <BR> <I>Ex. Malignant growths can be produced experimentally in animals by the use of certain irritating substances called carcinogens (Newsweek).</I> </DL>
