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rapidity

From Wiktionary, the free dictionary

English

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Etymology

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From rapid +‎ -ity, from French rapidité, from Latin rapiditas.

Pronunciation

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Noun

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English Wikipedia has an article on:
Wikipedia

rapidity (countable and uncountable, plural rapidities)

  1. speed, swiftness; the condition of being rapid
    • 1944 November and December, Talisman, “A Broadening Horizon”, in Railway Magazine, page 340:
      Although appreciating the rapidity and frequency of the Southern electric services I was now to use on short journeys, I became more than ever convinced that electric traction offers very little of interest to the dyed-in-the-wool railwayist.
    • 2023, Simon Mays, “The Macroscopic Study of Human Skeletal Paleopathology” (chapter 2), in The Routledge Handbook of Paleopathology, Routledge, →DOI, →ISBN, pages 25–26:
      In clinical practice, the generation of diagnostic hypotheses occurs especially readily and rapidly in subdisciplines such as dermatology, where gross appearance of lesions is of particular importance diagnostically […]. The primacy of macroscopy in paleopathology means that the activation of skeletal disease scripts occurs with similar facility and rapidity when skeletal remains are examined.
  2. (relativity) A measure of velocity relative to the speed of light; defined as artanh(v), where artanh is the hyperbolic arctangent, and v = speed (with c = speed of light = 1).
  3. (physics) A measure of the velocity of a particle in a beam relative to the beam's axis

Derived terms

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Translations

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