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a longitudinal earthquake wave that travels through the interior of the earth and is usually the first conspicuous wave to be recorded by a seismograph.

1908 in geology, the p representing primary (adj.).

P wave n.
A deflection in an electrocardiogram indicating depolarization of the atria.
P wave
See primary wave.
pressure wave


Read Also:

  • Pwba

    Pension and Welfare Benefits Administration

  • PWC

    1. . National Organization of Physicians Who Care

  • Pwd

    1. Public Works Department. person with disability

  • P.W.D.

    1. Public Works Department.

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