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   Surfactant - definition of surfactant by The Free Dictionary
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href=//medical-dictionary.thefreedictionary.com/pulmonary+surfactant> Pulmonary surfactant </a></div><div id=MainTxt><div id=Definition><section data-src=hm><h2>sur·fac·tant</h2><span class=snd data-snd=S0913700> </span>   <span class=pron onclick=pron_key()> (sər-făk′tənt, sûr′făk′-) </span><div class=pseg><i> n. </i><div class=ds-list><b> 1. </b> A surface-active substance.</div><div class=ds-list><b> 2. </b> 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.</div></div><hr align=left class=hmshort><div class=etyseg>[surf(ace)-act(ive) + <a href=agent> a(ge)nt </a> .]</div><div class=cprh><span class="i A cpr"> </span> American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.</div></section><section data-src=hc_dict><h2>surfactant</h2> ( <span class=pron onclick=pron_key(1)> sɜːˈfæktənt </span> ) <div><i> n </i><div class=ds-list>(Chemistry) Also called: <b> surface-active agent </b> 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</div></div><div><i> adj </i><div class=ds-list>(Chemistry) having the properties of a surfactant</div></div><div class=etyseg>[C20: <i> surf </i> ( <i> ace </i> ) <i> -act </i> ( <i> ive </i> ) <i> a </i> ( <i> ge </i> ) <i> nt </i> ]</div><div class=cprh><span class="i A cpr"> </span> Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014</div></section><section data-src=rHouse><h2>sur•fac•tant</h2><span class=pron onclick=pron_key(1)> (sərˈfæk tənt) </span><br><br><i> n. </i><div class=ds-single>any surface-active substance, as a detergent or a natural or artificial substance that coats the lungs and prevents them from collapsing.</div><div class=etyseg>[1945–50; <i> surf(ace) </i><i> -act(ive) </i><i> a(ge) </i><i> nt </i> ]</div><div class=cprh><span class="i A cpr"> </span> Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.</div></section><section data-src=hm_sci><h2>sur·fac·tant</h2><span class=pron onclick=pron_key()> (sər-făk′tənt) </span><div class=pseg><i> </i><div class=ds-list><b> 1. </b> A substance, such as detergent, that is added to a liquid to increase its ability to spread.</div><div class=ds-list><b> 2. </b> A substance produced by the tiny air-filled sacs of the lung that reduces the surface tension of the fluids coating the lung. Surfactant helps keep the tiny air sacs from collapsing during normal breathing.</div></div><div class=cprh><span class="i A cpr"> </span> The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.</div></section><section data-src=shUnfW><h2>surfactant</h2><div class=ds-single>(surface active agent) A substance (for example a detergent) added to a liquid which can alter its spreading or wetting characteristics by lowering its surface tension.</div><div class=cprh><span class="i A cpr"> </span> Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited</div></section></div><div id=Thesaurus><div id=ThesaurusHead><span id=ThesaurusTitle> Thesaurus </span><span id=ThesaurusLegend> <span class=Ant> Antonyms </span> <span class=Rel> Related Words </span> <span class=Syn> Synonyms </span> <span class=label> <b> Legend: </b> </span> </span></div><div id=ThesaurusInner><div style=padding:5px;background:#DADAF7;font-size:16px;line-height:25px><span> Switch to <a href=//www.freethesaurus.com/surfactant> new thesaurus </a> </span></div><section data-src=wn><table id=wn><tbody><tr><td style=vertical-align:top><b> Noun </b><td style=vertical-align:top><b> 1. </b><td><b> surfactant </b> - a chemical agent capable of reducing the surface tension of a liquid in which it is dissolved <div class=Syn><a href=surface-active+agent> surface-active agent </a> , <a href=wetter> wetter </a> , <a href=wetting+agent> wetting agent </a></div> <div class=Rel><a href=emulsifier> emulsifier </a> - a surface-active agent that promotes the formation of an emulsion</div> <div class=Rel><a href=chemical+agent> chemical agent </a> - an agent that produces chemical reactions</div> <div class=Rel><a href=detergent> detergent </a> - a surface-active chemical widely used in industry and laundering</div></table><div class=cprh><span class="i A cpr"> </span> Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.</div></section></div></div><div id=Translations><div id=TranslationsHead><span id=TranslationsTitle> Translations </span></div><div data-lang=frdees id=translbody><section class=simpleTrans><div lang=fr><a class=trans href=//fr.thefreedictionary.com/tensioactif> tensioactif </a><b class=trans> tensio-actif </b></div></section><section data-src=hc_En_De lang=de><div lang=En><h2>surfactant</h2><div class=ds-list><i> n </i> (Chem) → <span lang=de> <a href=//de.thefreedictionary.com/Tensid> Tensid </a> </span><i> nt </i></div></div><div class=cprh><span class="i A cpr"> </span> Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007</div></section><section data-src=wkEnEs lang=es><div lang=En><h2>sur·fac·tant</h2><div class=ds-single><i> n. </i> surfactante, agente tensoactivo que modifica la tensión superficial de un líquido.</div></div><div class=cprh><span class="i A cpr"> </span> English-Spanish Medical Dictionary © Farlex 2012</div></section><section data-src=mghEnEs lang=es><div lang=En><h2>surfactant</h2><span lang=es> <em> n </em> surfactante <em> m </em> </span></div><div class=cprh><span class="i A cpr"> </span> English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. 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class="block width34"><div class=heading-block><strong class=title> Mentioned in </strong><a class=link href=//www.thefreedictionary.com/_/help/help3.htm#324> ? </a></div><div class="list-holder height240"><ul><li><a href=chemical+agent> chemical agent </a><li><a href=cosurfactant> cosurfactant </a><li><a href=detergent> detergent </a><li><a href=emulsifier> emulsifier </a><li><a href=ethanolamine> ethanolamine </a><li><a href=fatty+alcohol> fatty alcohol </a><li><a href=infant+respiratory+distress+syndrome> infant respiratory distress syndrome </a><li><a href=olamine> olamine </a><li><a href=respiratory+distress+syndrome> respiratory distress syndrome </a><li><a href=surface-active> surface-active </a><li><a href=surface-active+agent> surface-active agent </a><li><a href=wetter> wetter </a><li><a href=wetting+agent> wetting agent </a></ul></div></div><div class="block width61"><div class=heading-block><strong class=title> References in periodicals archive </strong><a class=link href=//www.thefreedictionary.com/_/help/help3.htm#325> ? </a></div><div class="list-holder height240"><div class=lit>Liquid <span class=highlight> Surfactant </span> Compositions that Adhere to Surfaces and Solidify and Swell in the Presence of Water and Articles Using the Same: Jeffery Richard Seidling, Appleton, WI; Scott W. <div class=lit_links><a href=https://www.thefreelibrary.com/U.S.+Patent+No.+9%2C237%2C972+B2-a0447932316> U.S. Patent No. 9,237,972 B2 </a></div></div><div class=lit>INTRODUCTION: <span class=highlight> Surfactant </span> is a naturally produced substance in the lungs and it is a kind of foamy, fatty liquid that acts like grease within the lungs. <div class=lit_links><a href=https://www.thefreelibrary.com/Role+of+surfactant+administration+in+premature+infants+with+acute...-a0471273807> Role of surfactant administration in premature infants with acute respiratory distress syndrome </a></div></div><div class=lit>Objectives: To assess a single-centre experience and outcome of premature neonates who received <span class=highlight> surfactant </span> therapy. <div class=lit_links><a href=https://www.thefreelibrary.com/Surfactant+use+in+premature+neonates+less+than+37+weeks+gestation%3A...-a0414153871> Surfactant use in premature neonates less than 37 weeks gestation: Experience and outcome at a tertiary care hospital </a></div></div><div class=lit>Maximum wetting and minimal defects require the proper <span class=highlight> surfactant </span> to promote substrate wetting and minimize foam generation. <div class=lit_links><a href=https://www.thefreelibrary.com/Ask+the+expert-a0417186466> Ask the expert </a></div></div><div class=lit>Injection of <span class=highlight> surfactant </span> to change properties of the reservoir rock and fluid is one of enhanced oil extraction methods. <div class=lit_links><a href=https://www.thefreelibrary.com/Iranian+Scientists+Use+Nanotechnology+to+Boost+Oil+Extraction-a0401126523> Iranian Scientists Use Nanotechnology to Boost Oil Extraction </a></div></div><div class=lit>As part of the move, Wilmar has inked a multi-year accord to buy sulphated <span class=highlight> surfactant </span> products from Huntsman facilities in France and Italy. <div class=lit_links><a href=https://www.thefreelibrary.com/Huntsman+wraps+up+sale+of+European+commodity+surfactants+business+to...-a0380523157> Huntsman wraps up sale of European commodity surfactants business to Wilmar </a></div></div><div class=lit>Respiratory distress syndrome is pulmoner insufficiency caused by the lack of <span class=highlight> surfactant </span> and the main reason of morbidity and mortality in preterm infants. <div class=lit_links><a href=https://www.thefreelibrary.com/The+use+of+surfactant+in+the+neonatal+period-+the+known+aspects%2C+those...-a0496450981> The use of surfactant in the neonatal period- the known aspects, those still under research and those which need to be investigated further </a></div></div><div class=lit>Fact.MR's latest forecast study estimates that the global <span class=highlight> surfactant </span> cleansers and adjuvants market will expand at a value CAGR of 3.4% over the forecast period, 2017-2026. <div class=lit_links><a href=https://www.thefreelibrary.com/Complete+research+report+on+Surfactant+Cleansers+and+Adjuvants+Market...-a0594399191> Complete research report on Surfactant Cleansers and Adjuvants Market 2019 with top player's analysi </a></div></div><div class=lit>Further, rising demand for <span class=highlight> surfactant </span> from industrial sector and ever increasing demand for apparels in textile industry, and rising demand for leather accessories such as shoes, wallets, purse, and belts are expected to increase the requirement for <span class=highlight> surfactants </span> too. <div class=lit_links><a href=https://www.thefreelibrary.com/Surfactants+market+to+be+worth+%2428.83bn-a0592041366> Surfactants market to be worth $28.83bn </a></div></div><div class=lit>Summary: Fact.MR's latest forecast study estimates that the global <span class=highlight> Surfactant </span> Cleansers and Adjuvants Market will expand at a value CAGR of 3.4% over the forecast period, 2017-2026. <div class=lit_links><a href=https://www.thefreelibrary.com/Surfactant+Cleansers+and+Adjuvants+Market+Analysis%2C+Size%2C+Share%2C...-a0589670043> Surfactant Cleansers and Adjuvants Market Analysis, Size, Share, Trends & Growth Projections Studied </a></div></div><div class=lit>By type, the global <span class=highlight> surfactants </span> market is classified into cationic <span class=highlight> surfactant </span> , anionic <span class=highlight> surfactant </span> , nonionic <span class=highlight> surfactant </span> , amphoteric <span class=highlight> surfactant </span> and others. <div class=lit_links><a href=https://www.thefreelibrary.com/GLOBAL+SURFACTANTS+MARKET+EXPECTED+TO+REACH+%2464.40+BILLION+BY+2025-a0564218353> GLOBAL SURFACTANTS MARKET EXPECTED TO REACH 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