surfactant
[ ser-fak-tuhnt ]
/ sərˈfæk tənt /
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noun Chemistry.
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Origin of surfactant
1945–50; shortening of surf(ace)-act(ive)a(ge)nt
Words nearby surfactant
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for surfactant
The researchers then reduced the water’s surface tension with a surfactant to make it more difficult for the ants to float.
Fire ants build little syphons out of sand to feed without drowning|Aayushi Pratap|October 20, 2020|Science NewsDifferent types of surfactants are often added to pesticides to help them spread better, the researchers say, so ants could potentially be exposed to similar conditions in the wild as they were in the lab.
Fire ants build little syphons out of sand to feed without drowning|Aayushi Pratap|October 20, 2020|Science News
British Dictionary definitions for surfactant
surfactant
/ (sɜːˈfæktənt) /
noun
Also called: surface-active agent a substance, such as a detergent, that can reduce the surface tension of a liquid and thus allow it to foam or penetrate solids; a wetting agent
adjective
having the properties of a surfactant
Word Origin for surfactant
C20: surf (ace) -act (ive) a (ge) nt
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
Medical definitions for surfactant
surfactant
[ sər-făk′tənt, sûr′făk′- ]
n.
A surface-active substance.
A substance composed of lipoprotein that is secreted by the alveolar cells of the lung and serves to maintain the stability of pulmonary tissue by reducing the surface tension of fluids that coat the lung.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for surfactant
surfactant
[ sər-făk′tənt ]
A substance that, when dissolved in water, lowers the surface tension of the water and increases the solubility of organic compounds. Surfactants are used in inks to increase the effects of capillary action; detergents are surfactants that help remove organic compounds from a substance by making them dissolve more readily in the water in which the substance is washed.
A substance composed of lipoprotein that is secreted by the alveolar cells of the lung and maintains the stability of pulmonary tissue by reducing the surface tension of fluids that coat the lung.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.