hormone(n = noun.body) endocrine, internal secretion - the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect;
is a kind of secretion
has particulars: acth, adrenocorticotrophic hormone, adrenocorticotrophin, adrenocorticotropic hormone, adrenocorticotropin, corticotrophin, corticotropin, adrenalin, adrenaline, epinephrin, epinephrine, gastrointestinal hormone, gi hormones, glucagon, gonadotrophic hormone, gonadotrophin, gonadotropic hormone, gonadotropin, insulin, melatonin, neurohormone, oxytocin, pitocin, parathormone, parathyroid hormone, relaxin, hypothalamic releasing factor, hypothalamic releasing hormone, releasing factor, releasing hormone, rh, growth hormone, human growth hormone, somatotrophic hormone, somatotrophin, somatotropic hormone, somatotropin, sth, thymosin, thyroid hormone, adh, antidiuretic hormone, pitressin, vasopressin, sex hormone, steroid, steroid hormone, adrenosterone, glucocorticoid, catecholamine, melanocyte-stimulating hormone, msh, thyroid-stimulating hormone, thyrotrophic hormone, thyrotrophin, thyrotropic hormone, thyrotropin, tsh, protirelin, thyrotropin-releasing factor, thyrotropin-releasing hormone, trf, trh
Derived form adjective hormonal₁

1.  A chemical substance formed in one organ and carried in the circulation to another organ on which it exerts a specific effect on cells at a distance from the producing cells; thus, pituitary hormones produced in the brain may have effects on cells in distant parts of the body.. [Webster 1913 Suppl.]

2.  a chemical substance, whether natural or synthetic, that functions like a hormone in a living organism. Thus, synthetic steroid hormones may be more effective than their natural counterparts. [PJC]

3.  A substance that controls growth rate or differentiation in plants; also called phytohormone. The most well-known are the auxins that stimulate growth at the growing tips of plants, and control root formation and the dropping of leaves; and the gibberellins, which are used in agriculture to promote plant growth. [PJC]

hormone, n.
1 Biochem. a regulatory substance produced in an organism and transported in tissue fluids such as blood or sap to stimulate cells or tissues into action.
2 a synthetic substance with a similar effect.

Derivative:
hormonal adj.

Etymology:
Gk hormon part. of hormao impel

adrenocorticotrophic hormone, adrenocorticotropic hormone, androgenic hormone, antidiuretic hormone, follicle-stimulating hormone, gonadotrophic hormone, gonadotropic hormone, growth hormone, hormone replacement therapy, human growth hormone, hypothalamic releasing hormone, interstitial cell-stimulating hormone, juvenile hormone, lactogenic hormone, luteinizing hormone, melanocyte-stimulating hormone, parathyroid hormone, plant hormone, releasing hormone, sex hormone, somatotrophic hormone, somatotropic hormone, steroid hormone, thyroid hormone, thyroid-stimulating hormone, thyrotrophic hormone, thyrotropic hormone, thyrotropin-releasing hormone