Epinephrine
WordNet
noun
(1) A catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action
WiktionaryText
Etymology
From + + .
Noun
- Adrenaline: a catecholamine hormone secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system).
- A neurotransmitter which is synthesized from norepinephrine.
Usage notes
Is used medicinally as a heart stimulant, vasoconstrictor and bronchial relaxant.