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

  • Dirac, Paul Adrien Maurice 1902-1984. British mathematician and physicist. He shared a 1933 Nobel Prize for new formulations of the atomic theory.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • proper n. A surname of French derivation
  • proper n. Paul Dirac British physicist

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

  • n. English theoretical physicist who applied relativity theory to quantum mechanics and predicted the existence of antimatter and the positron (1902-1984)


Sorry, no etymologies found.


  • Dirac is sent off to train with his fellow soldiers and assigned to the squad of Jane Sagan who is ordered to watch him in case of any developments.

    The Ghost Brigades by John Scalzi

  • There's no need to waste a perfectly good soldier so Dirac is handed over to CDF Special Forces.

    REVIEW: The Ghost Brigades by John Scalzi

  • Dirac is simultaneously sympathetic and distant; sympathetic because he's somewhat of a victim, distant because we know the evil that is lurking inside waiting to take hold.

    REVIEW: The Ghost Brigades by John Scalzi

  • The emergence of Boutin's memories in Dirac provided a great buildup of tension.

    REVIEW: The Ghost Brigades by John Scalzi

  • I had met an American girl, Barbara Seavey, in Dirac's lectures on quantum mechanics, and a year and a half later I wanted to marry her, but I was broke.

    Allan M. Cormack - Autobiography

  • On the other hand, in Dirac's theory which does not use the Hamiltonian formalism, it becomes possible to consider different time variables for each particle, so that the probability amplitude can be expressed as a function of r1, t1, r2 t2, ..., rN tN.

    Sin-Itiro Tomonaga - Nobel Lecture

  • For later on, positive electrons, the positrons, whose existence was stipulated in Dirac's theoretical investigation, have been found by experiment.

    Nobel Prize in Physics 1932 and 1933 - Presentation Speech

  • For example, the electronic band-structure (so-called Dirac cone structure) has been first visualized in this material.

    Haddock Links

  • The initial implementation of Dirac at resulted in a research implementation which is referred to as the Dirac codebase.

  • We already have an open wavelet codec in Dirac, which is not currently applicable to the Web, because it doesn’t work well for small resolution video.

    ginger's thoughts » Google’s challenges of freeing VP8


Log in or sign up to get involved in the conversation. It's quick and easy.