Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A substance used in a chemical reaction to detect, measure, examine, or produce other substances.
from The Century Dictionary.
- noun In experimental psychology: The observer in any form of psychological experiment: opposed to experimenter.
- noun Same as
reactor . - noun One who or that which exerts reflex action or influence; an agency that produces reciprocal effects; a cause or source of counter-results.
- noun In chem., a substance used to effect chemical change in another substance for the purpose of identifying its component parts or of ascertaining its percentage composition.
- noun Anything used for the treatment of a substance under investigation to render its nature or condition more evident.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Chem.) A substance capable of producing with another a reaction, especially when employed to detect the presence of other bodies; a test.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry A usually available or readily made
compound or known mixture of compounds used to treat materials, samples, other compounds orreactants in alaboratory or sometimes an industrial setting.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a chemical agent for use in chemical reactions
Etymologies
Sorry, no etymologies found.
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Examples
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The most remarkable feature of Tebbe's reagent is a methylene group bridging between titanium and aluminum, which could replace the oxygen in a carbonyl group in a Wittig-like reaction.
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In the reaction shown below only one of the mirror image forms of a Corey-reagent is used.
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The reagent is first reacted with borane (BH3) which can then reduce a carbonyl group to an alcohol.
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Benedict’s reagent is a solution of copper sulfate, sodium hydroxide, and tartaric acid.
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The utility of the reagent was always limited by its instability under normal laboratory conditions.
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Thanks to the workers of the Civil Defense Laboratory, in cooperation with other institutions, we now have a Cuban reagent, which is very good and very efficient for the analysis of AIDS, but large amounts of it are expended by the old equipment.
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The system consists of a compact, 5.1 kilogram 11.2 pounds, portable analyzer and a series of single-use plastic discs, called reagent discs that contain all the chemicals required to perform a panel of up to 13 tests on veterinary patients and 14 tests on human patients.
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A nanoscale gold "reagent" - which detects a substance via a chemical reaction - is injected, followed by a silver one that interacts with the gold to produce an ultra-thin film.
Telegraph.co.uk - Telegraph online, Daily Telegraph and Sunday Telegraph 2011
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The system consists of a compact, 5.1 kilogram (11.2 pounds), portable analyzer and a series of single-use plastic discs, called reagent discs that contain all the chemicals required to perform a panel of up to 13 tests on veterinary patients and 14 tests on human patients.
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The system consists of a compact, 5.1 kilogram (11.2 pounds), portable analyzer and a series of single-use plastic discs, called reagent discs that contain all the chemicals required to perform a panel of up to 13 tests on veterinary patients and 14
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