Freebase(0.00 / 0 votes)Rate this definition: Hydroelectricity. Hydroelectricity is the term referring to electricity generated by hydropower; the production of electrical power through the use of the gravitational force of falling or flowing water.
Definition: Hormones. Hormones. Hormones are chemical substances that act like messenger molecules in the body. After being made in one part of the body, they travel to other parts of the body where they help control how cells and organs do their work. For example, insulin is a hormone that's made by the beta cells in the pancreas.
the noun hormone has 1 sense 1 the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect familiarity information hormone used as a noun is very raredictionary entry details hormone noun the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect familiarity information hormone used as a noun is very rare dictionary entry details hormone noun