Acid-Fast is a 9 letter English word. It's valid Scrabble word worth 7 points. It's valid Words with friends word worth 8 points.
You can make 242 anagrams from letters in acid-fast (-aacdfist).
First recorded in 1900-05
This method is supposed to differentiate between B. tuberculosis and other acid-fast micro-organisms.
Other bacteria than the acid-fast group are stained blue by Gabbet's method.
The acid-fast bacteria are particularly rich in fatty substances, especially the higher wax-like fats.