Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An elementary particle having the same mass and magnitude of charge as an electron but exhibiting a positive charge; a positive electron. Also called antielectron.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The antimatter equivalent of an electron, having the same mass but a positive charge

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an elementary particle with positive charge; interaction of a positron and an electron results in annihilation

Etymologies

posi(tive) + (elec)tron.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

  • The anti-particle of a negatively charged electron, for example, has a positive charge and is called a positron.

    I’m Working on That

  • The positron is slowed down by the water and destroyed together with an electron (matter meets antimatter), whereupon two photons (light particles) are created.

    Press Release: The 1995 Nobel Prize in Physics

  • Referring to the so-called positron, the positive particle regarded as the polar opposite of the negative electron, he remarks: 'A positron is a hole from which an electron has been removed; it is a bung-hole which would be evened up with its surroundings if an electron were inserted. ...

    Man or Matter

  • When people are suffering with major depression, research has shown that a type of nuclear medicine scan called positron emission tomography PET can often reveal specific regions of their brains with decreased metabolic activity—a reduced flow of chemical messengers between nerve cells.

    The 7

  • A positron is the antimatter equivalent of an electron, and perhaps the easiest anti-particle to manufacture and store.

    Wired Top Stories

  • In another series of tests, Savic and Lindström used a technique called positron emission tomography PET to look at brain wiring in a smaller group of volunteers.

    BiGender and the Brain

  • One evening in 2003, after yet another test, a type of brain scan called a positron emission tomography, Mr. Kammerer's physician called.

    When Alzheimer's Hits at 40

  • There's some very compelling issues -- very compelling data using some of the state of the art imaging techniques called positron emission tomography (ph) or functional magnetic resonance imaging.

    CNN Transcript Feb 21, 2007

  • In the study, a team at the University of Groningen led by Gert Holstege scanned the brains of 13 women and 11 men using a technique called positron emission tomography PET, while they manually stimulated to orgasm by their partners.

    Women equals Emotional Stimulation . . . . . . Men equals Physical Stimulation . . .. . . trance, orgasm, and the brain

  • For example, the antimatter version of the negatively charged electron is the positively charged anti-electron, known as a positron.

    Telegraph.co.uk - Telegraph online, Daily Telegraph and Sunday Telegraph

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