law of excitation n.
The principle that a motor nerve responds to the alteration of value of an electric current from moment to moment.
noun, Mathematics. 1. the theorem stating the elementary properties of exponents, as the property that the product of the same bases, each raised to an exponent, is equal to the base raised to the sum of the exponents: xa ⋅ xb = xa + b .
- Law of heart
law of heart n. The principle that the energy released by the heart when it contracts is a function of the length of its muscle fibers at the end of diastole. Also called Starling’s law.
noun, Logic. 1. the law that any proposition implies itself.
noun, Genetics. 1. the principle, originated by Gregor Mendel, stating that when two or more characteristics are inherited, individual hereditary factors assort independently during gamete production, giving different traits an equal opportunity of occurring together. law of independent assortment n. See Mendel’s law. law of independent assortment See under Mendel’s law.