Definition of "propranolol" []

• A drug, C16H21NO2, that blocks beta-adrenergic activity, used to treat hypertension, angina pectoris, and cardiac arrhythmia and to prevent migraine headaches. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "North Korean pistol shooter Kim Jong Su was thrown out, not for steroid use, but for using a drug called propranolol."
• "A US and Canadian team used a drug called propranolol to target unwanted memories, while leaving others intact."
• "GUPTA: With regard to propranolol, which is this blood pressure medication, it does appear to be needed at the time of the event so this may not be something of use of people suffering years later now from PTSD from 9/11."