WordReference Random House Unabridged Dictionary of American English © 2025
a•ce•tyl•cys•te•ine
(ə sēt′l sis′tē ēn′, -in, ə set′-, as′i tl-),USA pronunciation n. [Pharm.]
- Drugsa substance, C5H9NO3S, used in solution as an inhalant to dissolve mucus in the treatment of chronic bronchitis, asthma, and emphysema and also used as an antidote in acetaminophen poisoning.
- acetyl + cysteine