acid-fast
[ as-id-fast, -fahst ]
/ ˈæs ɪdˌfæst, -ˌfɑst /
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adjective
resistant to decolorizing by acidified alcohol after staining.
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Origin of acid-fast
First recorded in 1900–05
OTHER WORDS FROM acid-fast
acid-fastness, nounWords nearby acid-fast
acid deposition, acid drop, acid dust, acid dye, acidemia, acid-fast, acid-forming, acid fuchsin, acid halide, acid-head, acid house
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for acid-fast
British Dictionary definitions for acid-fast
acid-fast
adjective
(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
Medical definitions for acid-fast
acid-fast
adj.
Of or relating to bacteria that are not decolorized by an acidic alcohol solution after they have been stained.
Other words from acid-fast
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.