Advertisement

Advertisement

acid-fast

[as-id-fast, -fahst]

adjective

  1. resistant to decolorizing by acidified alcohol after staining.

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
Discover More

Other Word Forms

  • acid-fastness noun
Discover More

Word History and Origins

Origin of acid-fast1

First recorded in 1900–05

Advertisement

Advertisement

Advertisement

Advertisement

acid dyeacid-forming

Browse

  • #
  • aa
  • bb
  • cc
  • dd
  • ee
  • ff
  • gg
  • hh
  • ii
  • jj
  • kk
  • ll
  • mm
  • nn
  • oo
  • pp
  • qq
  • rr
  • ss
  • tt
  • uu
  • vv
  • ww
  • xx
  • yy
  • zz