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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 cell, acid deposition, acid drop, acid dust, acid dye, acid-fast, acid-forming, acid halide, acid-head, acid house, acidic
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use acid-fast in a sentence
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
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