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γ

 
gamma, the third letter of the Greek alphabet, often used to indicate the third member of a series, such as the γ chain of hemoglobin. See also terms beginning gamma.

gamma

 [gam´ah]
the third letter of the Greek alphabet, γ, used in names of chemical compounds to distinguish one of three or more isomers or to indicate the position of substituting atoms or groups.
gamma chain disease a type of heavy chain disease that resembles a malignant lymphoma, with symptoms of lymphadenopathy, hepatosplenomegaly, and recurrent infections.
gamma globulin
1. a class of plasma proteins composed almost entirely of immunoglobulins, the proteins that function as antibodies. Production of gamma globulin may be increased in the body when there is invasion by harmful microorganisms. An abnormal amount in the blood, a condition known as hypergammaglobulinemia, may be indicative of a chronic infection or certain malignant blood diseases. There is also a rare condition, agammaglobulinemia, in which the body is unable to produce gamma globulin; patients suffering from this are extremely susceptible to infection and must be given frequent injections of gamma globulin serum.
gamma rays (γ-rays) electromagnetic emissions from radioactive substances; they are similar to and have the same general properties as x-rays but are produced through the disintegration of certain radioactive elements. They consist of high energy photons, have short wavelengths, and have no mass and no electric charge. Gamma rays are sometimes used in the treatment of deep-seated malignancies (see radiation therapy).

γ

1. Third letter in the Greek alphabet, gamma.
2. In chemistry, denotes the third in a series, the fourth carbon in an aliphatic acid, or position 2 removed from the α position in the benzene ring.
3. Symbol for 10-4 gauss; surface tension; activity coefficient; microgram.
4. Symbol for photon. For terms having this prefix, see the specific term.

gam·ma

(gam'ă),
1. Third letter of the Greek alphabet, γ.
2. A unit of magnetic field intensity equal to 10-9 T.
[G.]

γ

/γ/ (gamma, the third letter of the Greek alphabet) the heavy chain of IgG; the γ chain of fetal hemoglobin; formerly, microgram.

gamma

/gam·ma/ (gam´ah)
1. third letter of the Greek alphabet, see also γ-.
2. obsolete equivalent for microgram.

gamma

[gam′ə]
Γ, γ, the third letter of the Greek alphabet. It is a symbol for photon, heavy-chain immunoglobulins, or the third component in a series of certain chemical groups, such as the gamma-chain of hemoglobin.

gamma

(1) Microgram; 10-6g. 
(2) An obsolete, non-SI (International System) unit of magnetic field strength equal to 0.795/0.775 ampere/m.

gamma

γ Symbol for:
1. Heavy chain of immunoglobulin G–IgG.
2. Hemoglobin monomeric chain.
3. Photon.
4. The 3rd carbon in an aliphatic organic molecule Genetics A value calculated by the ratio between synonymous DNA mutations, which don't result in a different amino acid being translated from a codon, and nonsynonymous mutations–which result in a different amino acid being encoded Imaging A measure of contrast 1. Film–The slope of the density vs. exposure curve 2. Electronic display terminology–The slope of the brightness distribution curve; a large gamma indicates a steep slope and high contrast.

γ

Abbreviation for activity coefficient;
gamma;
photon.

γ

1. Gamma (q.v.).
2. Abbreviation for activity coefficient; surface tension.

gam·ma

(γ) (gam'ă)
1. Third letter in the Greek alphabet.
2. chemistry The third in a series, the fourth carbon in an aliphatic acid, or position 2 removed from the α position in the benzene ring.
3. Symbol for 10-4 gauss.
4. For terms with the prefix γ, see the specific term.
[G.]

gamma

The third letter of the Greek alphabet. Often used in medicine to denote a particular class.

gamma

(y) radiation electromagnetic radiation of shorter wavelength and higher energy than X-RAYS. See ELECTROMAGNETIC SPECTRUM.

gamma (gyaˑ·m),

n Greek letter represented by γ. See also Greek letters.

γ

Third letter in the Greek alphabet, gamma; photon.

gamma

1. the third letter of the Greek alphabet, Γ or γ.
2. used in names of chemical compounds to distinguish one of three or more isomers or to indicate the position of substituting atoms or groups.
3. used in sensitometry to denote the straight line of a characteristic curve. The greater the film contrast the higher the gamma.

gamma benzene hexachloride
gamma delta T lymphocyte
gamma globulin
a class of plasma proteins composed almost entirely of immunoglobulins, the proteins that function as antibodies. Gamma globulins, immunoglobulins, antibodies and antiserum are often used synonomously and interchangeably. See also antibody.
Commercial preparations of gamma globulin are derived from blood serum of several species and are used for prevention, modification and treatment of various infectious diseases. This type of gamma globulin, which is an immune serum, contains a wide range of antibodies, depending on its method of production, and it provides passive immunity for several weeks. In cattle, its most common use is in the newborn orphan which receives no colostrum. In dogs and cats, it has been used in the prophylaxis, and occasionally treatment, of viral infections.
The production of gamma globulin may be increased in the body by the invasion of harmful microorganisms. An abnormal amount of gamma globulin in the blood, a condition known as hypergammaglobulinemia, may be indicative of a chronic infection or certain malignant blood diseases. There is also a rare inherited condition, agammaglobinemia, in which the body is unable to produce gamma globulin. Animals suffering from this condition are extremely susceptible to infection.
gamma glutamyl transferase (GGT)
see gamma glutamyl transferase.
gamma-aminobutyric acid (GABA)
an amino acid that is one of the principal inhibitory neurotransmitters in the central nervous system. GABAA receptors open chloride channels and GABAB receptors are linked to potassium channels. Avermectins act by stimulating the presynaptic release of GABA and enhancing its binding to the postsynaptic receptors
References in periodicals archive ?
Both images will also be stretched for contrast and have gamma corrections performed on it.
Panel Solutions Video Solutions LVDS Receiver Dynamic Gamma Adaptive dynamic range correction Correction Favorite Color Transformation Precise Gamma Correction Motion Artifact Estimation and Image Dithering Engine Compensation Color Temperature Adjustment Brightness and Contrast Adjustment Dynamic False Contour Reduction Sharpness Enhancement Timing Controller Motion Adapted Temporal Noise Reduction RSDS Transmitter LVDS Transmitter Mini LVDS Transmitter DDR Interface
The LC-20VM2U utilizes Sharp's Digital Gamma Correction Circuit, which improves the quality of the images viewed on the LCD screen.
Exposure makes gamma correction and contrast changes less intimidating by adding high level contrast, highlight and shadow controls to curves editing.
This feature rich Digital Display Processor offers true multisyncing, gamma correction, on screen display engine (OSD), and high quality scaling functions in a cost effective, easy to implement solution.
The proprietary four-part process includes White Uniformity, Gamma Correction, Black Detail Enhancement and Color Separation.
This powerful new chip will provide functions such as de-interlacing, horizontal and vertical scaling, color space conversion, gamma correction and backlight (dimming) control.
3Deep gamma correction software provides the first consistent, high-quality solution for improving the lighting and shading effects in 3D games.
Developed for applications in current 720p and 1080p single and 3 Chip DLP based displays as well as future 4K (3840 by 2160 pixels) devices and higher, the short-path LightGate(TM) design differs from the use of common irises and light flags to control the total effective light output of a display device, by addressing in real-time full spectrum gamma correction control on an individual pixel basis.
R) (Nasdaq: STBI), is bundling 3Deep, the first gamma correction software for 3D games and graphics.
The SoC integrates a state-of-the-art image sensor core with an advanced, on-chip image signal processor capable of defect interpolation, black level calibration, lens de-shading, crosstalk compensation, color mosaic interpolation, color correction, auto white balancing with illuminant estimation, auto exposure and gain control, sharpening, noise reduction, special effects and gamma correction.