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acid-fast

[as-id-fast, -fahst] /ˈæs ɪdˌfæst, -ˌfɑst/
adjective
1.
resistant to decolorizing by acidified alcohol after staining.
Origin
1900-1905
1900-05
Related forms
acid-fastness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for acidfast

acid-fast

adjective
1.
(of bacteria and tissues) resistant to decolorization by mineral acids after staining
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
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acidfast in Medicine

acid-fast adj.
Of or relating to bacteria that are not decolorized by an acidic alcohol solution after they have been stained.


ac'id-fast'ness n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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