1. Plural of epinephrin; a hormone and neurotransmitter produced by the adrenal glands that increases heart rate, blood pressure, and blood glucose levels in response to stress or danger.
Usage: Also called adrenaline, especially in British English.; Medical/scientific term.

Examples

• During the fight-or-flight response, the body releases epinephrins to prepare for action.
• High levels of epinephrins in the bloodstream can cause trembling and increased alertness.
• The doctor explained that epinephrins are crucial for survival in emergency situations.
• Athletes may experience a surge of epinephrins before competition, enhancing their performance.
• Epinephrins constrict blood vessels and dilate airways to improve oxygen delivery.