| chemical reaction | <chemistry> A process in which one or more substances are changed chemically into one or more different substances. (09 Oct 1997) |
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| chemical repair | Conversion of a free radical to a stable molecule. (05 Mar 2000) |
| chemical sampling | A sample that is obtained by whatever means is convenient and then purified of irrelevant elements before analysis; the assumption of thorough mixing is not necessary. (05 Mar 2000) |
| chemical sequencing | A lab technique used to determine the sequence of nucleotides in a DNA molecule. The DNA molecule is labelled with radioactive phosphorous (chemical element P), cut into fragments, and analysed through electrophoresis. (09 Oct 1997) |
| chemical shift | Dependence of the resonance frequency of a nucleus on the chemical binding of the atom or molecule in which it is contained. See: chemical shift artifact. (05 Mar 2000) |
| chemical shift artifact | In magnetic resonance imaging, a dark band caused by a biochemical difference in resonant frequency of adjacent regions rather than a true anatomic separation. (05 Mar 2000) |
| chemical solution | See: solution. (05 Mar 2000) |
| chemical sympathectomy | Destruction of the periareterial sympathetic nerves, as in Doppler's operation, by a corrosive such as phenol. (05 Mar 2000) |
| chemical synapse | <physiology> A nerve nerve or nerve muscle junction where the signal is transmitted by release from one membrane of a chemical transmitter that binds to a receptor in the second membrane. Importantly, signals only pass in one direction. (18 Nov 1997) |
| chemical synergism | Interaction of chemicals in a mixture to produce a greater toxic effect than would be expected from the sum of the toxicities of the individual chemicals. (09 Oct 1997) |
| chemical taxonomy | An approach to the classification of organisms based on the distribution of natural products. (05 Mar 2000) |
| chemical warfare | Tactical warfare using incendiary mixtures, smokes, or irritant, burning, or asphyxiating gases. (12 Dec 1998) |
| chemical warfare agents | Chemicals that are used to cause the disturbance, disease, or death of humans during war. (12 Dec 1998) |
| chemically cured resin | A resin which contains an initiator, usually benzoyl peroxide, and an activator, usually a tertiary amine, in separate pastes. When mixed, the amine reacts with the benzoyl peroxide to form free radicals and polymerization occurs. (05 Mar 2000) |
| chemiclave | A machine that sterilises surgical instruments with high-pressure, high-temperature water vapor, alcohol vapor, and formaldehyde vapor. (09 Oct 1997) |
Synonyms : Agricultural Chemistries, Chemistries, Agricultural
Synonyms : Analytical Chemistry, Chemistry, Analytic, Analytic Chemistry
Synonyms : Bioinorganic Chemistries, Chemistries, Bioinorganic
Synonyms :
Synonyms : Chemistries, Inorganic, Inorganic Chemistries
| chemical energy |
that part of the energy in a substance that can be released by a chemical reaction
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| Chemical Mace |
Mace: (trademark) a liquid that temporarily disables a person; prepared as an aerosol and sprayed in the face, it irritates the eyes and causes dizziness and immobilization
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| chemically |
by the use of chemicals; "chemically fertilized" with respect to chemistry; "chemically different substances"
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| chemiluminescence |
luminescence resulting from a chemical reaction as the oxidation of luciferin in fireflies
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| chemistry |
the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions the way two individuals relate to each other; "their chemistry was wrong from the beginning -- they hated each other"; "a mysterious alchemy brought them together"
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| chemi | a substance producing irritation |
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| chemi | (trademark) a liquid that temporarily disables a person |
| chemi | the atomic process that occurs during a chemical reaction |
| chemi | a notation used by chemists to express technical facts in chemistry |
| chemi | warfare using chemical agents to kill or injure or incapacitate the enemy |
| chemi | (chemistry) any natural phenomenon involving chemistry (as changes to atoms or molecules) |
| chemi | an industrial plant where chemicals are produced |
| chemi | (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved |
| chemi | a property used to characterize materials in reactions that change their identity |
| chemi | (chemistry) a process in which one or more substances are changed into others |
| chemi | an apparatus for holding substances that are undergoing a chemical reaction |
| chemi | the science of matter |