ra·​pid·​i·​ty | \ rə-ˈpi-də-tē How to pronounce rapidity (audio) , ra- \

Definition of rapidity

: the quality or state of being rapid

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Examples of rapidity in a Sentence

the rapidity with which she can do mental math calculations is amazing
Recent Examples on the Web Some true stories, especially ones that evolve with such rapidity and complexity, just can’t be told in real time. Washington Post, "The ‘action heroes’ and roadblocks of the U.S. coronavirus response," 5 May 2021 The blows struck by Ma Qiang's command fell with remarkable rapidity. Elliot Ackerman, Wired, "2034, Part IV: The Spratly Islands Ambush," 16 Feb. 2021 By Panasonic Recent decades have yielded several revelations about livewiring, but perhaps the biggest surprise is its rapidity. David Eagleman, Time, "Why Do We Dream? A New Theory on How It Protects Our Brains," 29 Dec. 2020 While the rapidity of gains is sure to remind some of the dot-com days, a few big differences exist. Katherine Greifeld, Bloomberg.com, "For Retail Stock Traders, This Is a Party They Can’t See Ending," 24 Nov. 2020 As the permafrost thaws with increasing rapidity, scientists’ emerging challenge is to discover and identify the microbes, bacteria and viruses that may be stirring. Kimberley R. Miner, Scientific American, "Deep Frozen Arctic Microbes Are Waking Up," 20 Nov. 2020 The rapidity of the shake-up is noteworthy since it’s taking place inside museums, a field with its gaze fixed on the past. Mary Carole Mccauley, baltimoresun.com, "Baltimore Museum of Art director Chris Bedford tries to change the world. So why does he make some people so angry?," 20 Nov. 2020 But his fortunes turned around with stunning rapidity after Biden won the South Carolina primary 14 days later. Mark Z. Barabak Staff Writer, Los Angeles Times, "After four years of upheaval, election day gives voters their say," 3 Nov. 2020 But because of the rapidity of climate change due to carbon emissions, trees may not be able to move fast enough on their own to save themselves. Heller Mcalpin, WSJ, "‘The Journeys of Trees’ Review: Giants in Transit," 9 Oct. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rapidity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of rapidity

1654, in the meaning defined above

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Time Traveler for rapidity

Time Traveler

The first known use of rapidity was in 1654

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Statistics for rapidity

Last Updated

8 May 2021

Cite this Entry

“Rapidity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rapidity. Accessed 18 May. 2021.

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More Definitions for rapidity


ra·​pid·​i·​ty | \ rə-ˈpi-də-tē How to pronounce rapidity (audio) \

Kids Definition of rapidity

: the quality or state of being rapid She said it with such rapidity I missed it.

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