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Abbreviation * (pharmaceutical drug): Initialism of N-acetyl-para-aminophenol. * (medical device): Acronym of Automatic Positive Airway Pressure.
Etymology from Wiktionary, CC BY-SA 4.0.
APAP
Today it means: para-acetylaminophenol (acetaminophen / paracetamol / tylenol), a particular kind of painkiller and fever-reducer generally available over the counter. Full definition →