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Penetrating; piercing: a penetrant wind.
Something that penetrates or is capable of penetrating.
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.


sharp; penetrating
1. (Chemistry) chem a substance that lowers the surface tension of a liquid and thus causes it to penetrate or be absorbed more easily
2. a person or thing that penetrates
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈpɛn ɪ trənt)

1. a person or thing that penetrates.
2. a lotion, cream, etc., that penetrates the skin.
[1535–45; < Latin penetrant- (s. of penetrāns), present participle of penetrāre to penetrate; see -ant]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
where [c.sub.0] is the equilibration concentration of penetrant attained after a long sorption time and [Tau] is a relaxation time.
length of 2x2, a can of spray rust penetrant and a hand maul.
Chilling may or may not improve the soundness of a casting when measured by standard non-destructive testing techniques like radiography or dye penetrant inspection, but the influence on microstructure and mechanical properties can be significant.
ERG were contracted to design five plants from 2m to 17.65m (6ft to 58ft) wide covering a range of processes including anodising, chemical milling, dye penetrant NDT solvent masking and electro-plating.
The first method, liquid immersion, involved placing the sample in the penetrant liquid at constant temperature ([+ or -]1 [degree] C).
Produced by both Citation Precision (Citation Co.), Rancho Cucamonga, California, and Tital, Bestwig, Germany, for up to 20 airplanes/month, the castings are T6 heat-treated, machined, alodined, have zeus rails attached, and are 100% visual and penetrant inspected by the foundry before delivery within 16 weeks.
A rigorous solution of the diffusion of penetrant into a laminar film comprised of multilayers of m components is presented by an orthogonal-expansion method.
There are five methods of NDT available to metalcasting - magnetic particle testing (MT), liquid penetrant testing (PT), ultrasonic testing (UT), radio- graphic testing (RT) and eddy current testing (ET).