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  • darcy
    darcy
    noun
    a unit of permeability, representing the flow, at 1 atmosphere, of 1 cubic centimeter of fluid with 1 centipoise viscosity in 1 second through a 1-square-centimeter cross section of porous medium 1 centimeter long.
  • Darcy
    Darcy
    noun
    a male given name.
  • Darcy,
    Darcy,
    French engineer who formulated the law (now named for him) governing the rate at which a fluid flows through a permeable medium. The darcy unit, used to measure the permeability of porous substances, is also named after him.

darcy

1 American  
[dahr-see] / ˈdɑr si /

noun

plural

darcies

  1. Physics. a unit of permeability, representing the flow, at 1 atmosphere, of 1 cubic centimeter of fluid with 1 centipoise viscosity in 1 second through a 1-square-centimeter cross section of porous medium 1 centimeter long.

Darcy 2 American  
[dahr-see] / ˈdɑr si /

noun

  1. a male given name.

Darcy 1 British  
/ ˈdɑːsɪ /

noun

  1. ( James ) Les ( lie ). 1895–1917, Australian boxer and folk hero, who lost only five professional fights and was never knocked out, considered a martyr after his death from septicaemia during a tour of the United States

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
darcy 2 British  
/ ˈdɑːsɪ /

noun

  1.  D.  geology a unit expressing the permeability coefficient of rock

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Darcy, 1 Scientific  

  1. French engineer who formulated the law (now named for him) governing the rate at which a fluid flows through a permeable medium. The darcy unit, used to measure the permeability of porous substances, is also named after him.

darcy 2 Scientific  
/ där′sē′ /

  1. A unit used to measure the permeability of porous substances such as soil. One darcy is equal to the passage of 1 cubic centimeter of fluid having a viscosity of 1 centipoise for 1 second under the pressure of 1 atmosphere through a medium having a volume of 1 cubic centimeter.

Etymology

Origin of darcy

After Henri-Philibert-Gaspard Darcy (1803–58), French engineer

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Olly: jesus. is there a girl on this planet who doesn't love mr. darcy Madeline: All girls love Mr. Darcy?

From "Everything, Everything" by Nicola Yoon

Olly: are you kidding? even my sister loves darcy and she doesn't love anybody.

From "Everything, Everything" by Nicola Yoon

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.