acid-fast

(redirected from acid-fastness)
Also found in: Dictionary, Thesaurus, Wikipedia.
Related to acid-fastness: Acid-fast bacilli

acid-fast

 [as´id-fast]
not readily decolorized by acids after staining; said of bacteria, especially Mycobacterium tuberculosis.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ac·id-fast

(as'id-fast),
Denoting bacteria that are not decolorized by acid-alcohol after having been stained with dyes such as basic fuchsin; for example, the mycobacteria and nocardiae.
Farlex Partner Medical Dictionary © Farlex 2012

acid-fast

(ăs′ĭd-făst′)
adj.
Not decolorized by acid after staining, as bacteria that retain dye after an acid rinse.

ac′id-fast′ness n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

ac·id-fast

(as'id-fast)
Denoting bacteria that are not decolorized by acid-alcohol after having been stained with dyes such as basic fuchsin; e.g., the mycobacteria and a few nocardiae.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

ac·id-fast

(as'id-fast)
Denoting bacteria that are not decolorized by acid-alcohol after having been stained with dyes such as basic fuchsin.
Medical Dictionary for the Dental Professions © Farlex 2012