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(biochemistry, organic chemistry, medicine) A catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine. It is also used as a medication.
Related-word data is supplemented by the Datamuse API. Datamuse results are suggestions, not automatic replacements.