Adrenaline

/əˈdrenəlɪn/

noun

A hormone released into the body in response to stress or excitement.

When she was chased by the dog, her body released adrenaline, making her heart beat faster.

Definition 1 of 2

Pro Tip 1/3

Adrenaline can cause physical symptoms like faster heartbeat, heavy breathing, or sweating.

Just before his speech, he felt an adrenaline surge that made his palms sweat.

Pro Tip 2/3

In medicine, 'adrenaline' is often associated with 'fight or flight,' the body's emergency reaction.

The paramedics used adrenaline to kick-start the patient's heart.

Pro Tip 3/3

Use 'adrenaline' to describe reactions, not adventurous situations themselves.

Skydiving triggers an adrenaline boost, not 'skydiving is adrenaline.'

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