• WordNet 3.6
    • n reagent a chemical agent for use in chemical reactions
    • ***
Webster's Revised Unabridged Dictionary
    • n Reagent (Chem) A substance capable of producing with another a reaction, especially when employed to detect the presence of other bodies; a test.
    • ***
Century Dictionary and Cyclopedia
    • n reagent One who or that which exerts reflex action or influence; an agency that produces reciprocal effects; a cause or source of counter-results.
    • n reagent 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. Thus, the infusion of galls is a reagent which indicates iron in solution by a dark-purple precipitate. Barium chlorid is a reagent which separates sulphuric acid from a solution in the insoluble form of barium sulphate which can be weighed, and from the weight of which the actual amount of sulphuric acid can readily be deduced.
    • n reagent Anything used for the treatment of a substance under investigation to render its nature or condition more evident. Ordinarily the object is to see what changes are thus produced, but the word is used more loosely, as in hardening reagents.
    • n reagent In experimental psychology: The observer in any form of psychological experiment: opposed to experimenter.
    • n reagent Same as reactor.
    • ***
Chambers's Twentieth Century Dictionary
    • n Reagent rē-ā′jent a substance that reacts on and detects the presence of other bodies: a test: one who exerts reflex influence
    • ***


In literature:

An excess of the reagent must be avoided.
"Scientific American, Volume XXXVI., No. 8, February 24, 1877" by Various
Ammonia is one of the most useful reagents for softening water.
"Human Foods and Their Nutritive Value" by Harry Snyder
The impurities, however, are not sufficient in quantity to offer a point of attack to any ordinary reagent.
"Skylark Three" by Edward Elmer Smith
The chief neutralising reagents have already been mentioned in Chapter VI.
"The Handbook of Soap Manufacture" by W. H. Simmons
Experiments were made, and various reagents did cast precipitates, but other than sand.
"The Book of the Damned" by Charles Fort
Regarding this reagent as another form of 'active oxygen,' it is important to contrast its actions with those of the hydrogen peroxide.
"Researches on Cellulose" by C. F. Cross
Slacked lime in solution, as lime water, is the reagent used.
"Steam, Its Generation and Use" by Babcock & Wilcox Co.
The colour-producing reagent is added and the tints compared.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1" by Various
The precipitate was dissolved so far as possible in an excess of the reagent, leaving an insoluble residue.
"A Brief Account of Radio-activity" by Francis Preston Venable
Murt signed her requisitions for exotic reagents and rare stains.
"Mate in Two Moves" by Winston Marks
The greatest loss suffered in the fire was that of the chemistry laboratory and its supplies and reagents.
"The Year When Stardust Fell" by Raymond F. Jones
The amount of reagent used was 75 ml.
"Myology and Serology of the Avian Family Fringillidae" by William B. Stallcup
In the case of solid reagents, e.g.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4" by Various
They are generally prepared by adding to a warm glue solution some reagent which destroys the property of gelatinizing.
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2" by Various
The chemist supplies preservative substances, and reagents used in the preparation of objects for the microscope.
"Stories of the Universe: Animal Life" by B. Lindsay
It is also a most important synthetic reagent.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 1" by Various
With the use of other condensing reagents the procedure may be as in the process of the B.A.S.F.
"Animal Proteins" by Hugh Garner Bennett
Great difficulties have been experienced in distinguishing the artificial products of these reagents.
"The Works of Francis Maitland Balfour, Volume 1" by Francis Maitland Balfour
It is a reagent which adds new qualities and rearranges what is received.
"Human Nature and Conduct" by John Dewey
Note the distortion that the animal has undergone through the action of the reagent.
"Elementary Zoology, Second Edition" by Vernon L. Kellogg

In news:

Biogenic Reagents Opens Biocarbon Production Facility In Marquette, Michigan.
A producer of high-value carbon products from renewable biomass, Biogenic Reagents, initiates commercial production at its new $30 million facility in Marquette, Michigan, creating 40 jobs in the region.
MultiFluor Western Blotting kits, a new line of reagents optimized for the FluorChem M, are launching jointly - creating a combined offering that provides a complete solution for multicolor fluorescent imaging.
Next, the specimens were re-prepared and etched with the reagents listed in Table 3.
In a few cases, the results were close, as was the case for the M7C3 carbides in the D3 specimen etched with Murakami's and Groesbeck's reagents compared to the measurement made when the matrix was darkened.
Results from Studies with Two New Reagents Showed Compatibility with Accepted Methods.
Process Safety: What is the flash point of Reagent Alcohol.
I am looking for a reliable table that shows the flash point of 3A alcohol ( Reagent Alcohol).
FastFect in vitro DNA transfection reagent is a new generation of gene delivery compounds for various established cell lines and primary cells.
Organozinc reagents potentially can play an important role in producing a variety of complex organic compounds.
However, susceptibility to degradation from air and moisture has hindered use of such reagents , which only have been available in liquid form.
(6) eliminated unnecessary steps and reduced the reagent cost and processing time for extract preparation by up to 80% when compared with the protocol established by Pratt (3).
GeneTex Inc, a leading manufacturer of antibodies and antibody-related reagents, will be attending the annual meeting of the America Society for Cell Biology (ASCB) from December 15-19 in San Francisco, CA.
This report is a business tool that can help market players properly evaluate new commercial opportunities in the microRNA market covering reagent, diagnostic and therapeutic submarkets.
The disks contain commercially available reagents and antibodies specific to each protein marker.

In science:

Contributed reagents/ materials/analysis tools: SB PM.
The Blind Watchmaker Network: Scale-freeness and Evolution
For example, consider a BN implemented as a set of coupled chemical reactions: the concentrations of the reagents will only fluctuate around their equilibrium values unless active steps are taken to drive the system away from equilibrium.
Maximum Power Efficiency and Criticality in Random Boolean Networks
This combination of reagents was chosen in an attempt to maximize sample yield and longevity, while minimizing non-specific adsorption of DNA and microspheres onto the coverslip.
Concentration and Length Dependence of DNA Looping in Transcriptional Regulation
Data and results of computation are represented by spatial distributions of reagent concentrations.
Hot Ice Computer
Precipitating reaction-diffusion chemical media are proved to be an ideal computing substrate for approximation of the planar Voronoi diagram [30, 18, 1]. A Voronoi diagram can be approximated in a two-reagent medium.
Hot Ice Computer
One reagent α is saturated in the substrate, drops of another reagent β are applied to the sites corresponding to planar points to be separated by bisectors.
Hot Ice Computer
The reagent β diffuses in the substrate and reacts with reagent α.
Hot Ice Computer
Our model includes two dependent variables: the temperature T and the deficient reagent fraction c.
Simple Model of Propagating Flame Pulsations
Crystals of such materials are prepared by adding the corresponding reagents to the growth solution.
Crystals for neutron scattering studies of quantum magnetism
However, once we invested in high-purity deuterated reagents to grow crystals for neutron scattering, we suddenly were unable to reproduce the synthesis.
Crystals for neutron scattering studies of quantum magnetism
Once a small amount of heavy water was added to our deuterated reagents, obtaining large crystals was straightforward.
Crystals for neutron scattering studies of quantum magnetism
Given considerable investment made in deuterated reagents, it was quite frustrating to find that in the disordered material with Br concentrations as low as 1%, persistent neutron diffraction experiments failed to detect any sign of magnetic long range order in applied fields.
Crystals for neutron scattering studies of quantum magnetism
Chemical reagents are never very pure and we certainly do not want a magnetic impurity in the semiconductor dot that will tend to cause unwanted spin flips.
A Self Assembled Nanoelectronic Quantum Computer Based on the Rashba Effect in Quantum Dots
Remove reagents with which the molecule may exchange chemically.
Experimental Quantum Computation with Nuclear Spins in Liquid Solution
The effect of scintillation light has also to be carefully investigated. In cooperation with the Reagent Research Center (Moscow) we finally made the first test of a RETGEMs coated with a SbC/CsI photo-cathode (some of our test are described in ).
The current progress of the ALICE Ring Imaging Cherenkov Detector