emission

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Related to Positron emission: positron emission tomography

emission

 [e-mish´un]
1. a discharge.
2. an involuntary discharge of semen.
nocturnal emission reflex emission of semen during sleep.
thermionic emission the application of heat, such as to a filament, resulting in the emission of electrons and ions.

e·mis·sion

(ē-mish'ŭn),
A discharge; usually referring to a discharge of the male internal genital organs into the internal urethra; the contents of the organs, including sperm cells, prostatic fluid, and seminal vesicle fluid, mix in the internal urethra with mucus from the bulbourethral glands to form semen. Compare: ejaculation.
[L. emissio, fr. e- mitto, to send out]

emission

/emis·sion/ (e-mish´un)
1. discharge (1).
2. an involuntary discharge of semen.

nocturnal emission  reflex emission of semen during sleep.
positron emission  a form of radioactive decay in which a positron (β+) and neutrino are ejected from the nucleus as a proton is transformed into a neutron. Collision of the positron with an electron causes annihilation of both particles and conversion of their masses into energy in the form of two 0.511 MeV gamma rays.

emission

[imish′ən]
Etymology: L, emittere, to send out
a discharge or release of something, as a fluid from the body, electronic signals from a radio transmitter, or an alpha or beta particle from an atomic nucleus during radioactive decay.

emission

The release of a gas, fluid or solid. See Alpha emission Otoacoustic emission.

e·mis·sion

(ē-mish'ŭn)
A discharge; referring usually to a discharge of the male internal genital organs into the internal urethra; the contents of the organs, including sperm cells, prostatic fluid, and seminal vesicle fluid, mix in the internal urethra with mucus from the bulbourethral glands to form semen.
[L. emissio, fr. e-mitto, to send out]

emission

A discharge of something. A nocturnal emission is an involuntary EJACULATION of semen, usually with orgasm, during sleep.

emission

a discharge.
References in periodicals archive ?
Based on product type, the global Positron Emission Tomography Scanners market is segmented into the following:
Based on end use, the global Positron Emission Tomography Scanners market is segmented into the following:
GE Healthcare recently announced the first installation of the company's new Discovery VCT, the world's first true 64-slice combination positron emission tomography and volume computed tomography (PET/CT) system for cardiac imaging applications at Brigham and Women's Hospital in Boston.
We believe through our research that an alternative to coronary bypass surgery exists and can be guided accurately and only by Positron Emission Tomography.
PET Management Services strategy is to provide strategic planning and implementation services to companies wishing to finance, sell, operate and own Positron Emission Tomography centers.
PET Management Services is a leader in molecular imaging solutions that brings to IMGM the necessary bioinformatics research and imaging center management that proves the model of Positron Emission Tomography (PET) as a primary diagnostic tool in the fight against coronary disease.
HOUSTON, Texas -- Positron Corporation (OTCBB:POSC), manufacturer of positron emission tomography (PET) scanners, announced today the formation of a joint venture with Neusoft Medical Systems in Shenyang, China.

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