1. A group of neurotransmitters and hormones (including epinephrine, norepinephrine, and dopamine) that regulate heart rate, blood pressure, and stress responses.
Usage: technical/medical; typically used in plural form; biochemistry and physiology term

Examples

• Catecholamines are released during the fight-or-flight response.
• The body produces catecholamines like adrenaline when under stress.
• Doctors measure catecholamine levels to diagnose certain hormonal disorders.
• Exercise increases catecholamine release in the bloodstream.
• Catecholamines affect mood, attention, and motivation in the brain.