from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A longitudinal compressional wave produced by an earthquake.


from Wiktionary, Creative Commons Attribution/Share-Alike License

From p(rimary) + wave.


  • This automated alarm is triggered by the initial elastic P-wave of a tremor, which immediately precedes the slower but more destructive secondary wave, which then shakes the ground back and forth perpendicular to the direction it is moving.

    Scientists Exploring Quake Warning Signals

  • And what is -- what is a P-wave and what is an S-wave?

    CNN Transcript Jan 12, 2010

  • It's a word that we use to describe when a P-wave and then an S-wave come together after the shock.

    CNN Transcript Jan 12, 2010

  • That moved this car and this car was -- the movement on this car was called a P-wave.

    CNN Transcript Jan 12, 2010

  • And the slipping causes two types of waves, an S-wave and a P-wave, and after the break, Wolf, we'll talk about how both of those could affect the people there of Haiti.

    CNN Transcript Jan 12, 2010

  • Overdosed on Aspartame at long last, she decided, settling her mouse-driven crosshairs onto the beginning of the P-wave portion of the newest wiggly line that she had conjured on her computer screen.

    Fault Line

  • It is often claimed that animals can detect the P-wave or ultrasonic wave generated by a big underground explosion or the rupture of an earthquake, even if the waves are too small for human senses.

    The Times of India

  • Tests in California showed that after an earthquake, four to six monitoring stations recorded features of the P-wave within seven seconds after the quake had struck.

    The Earth Times Online Newspaper

  • P-wave duration, P-wave area, and PR duration on ECG-referred to as AF predictors-by ethnicity and examined the association of these predictors with incident AF and ischemic stroke.

  • They compared the distribution of baseline measures of P-wave terminal force,


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  • A smaller pnami.

    February 6, 2011