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- A chemical substance produced by an endocrine gland and released into the
blood or lymph for the purpose of controlling the function of a distant organ or
organ system. This biochemical sends messages regulating moods, levels of
energy, and reactions to stress. Metabolism, growth, and development of
secondary sexual characteristics are among the functions so controlled.
- A discrete chemical substance secreted into the body fluids by an endocrine
gland, which has a specific effect on the activities of other organs. See
also neurohormone.
Source: Edgerton, Jane E. 1994. American Psychiatric Glossary, 7th Edition. Washington, DC: American Psychiatric Press
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