noun, plural rules of engagement.
a directive issued by a military authority controlling the use and degree of force, especially specifying circumstances and limitations for engaging in combat.
noun 1. the principle that all people and institutions are subject to and accountable to law that is fairly applied and enforced; the principle of government by law.
- Rule of outlet
rule of outlet n. A rule for determining whether the pelvic outlet will allow the passage of a normal-sized fetus by calculating whether the sum of the posterior sagittal diameter and the transverse diameter of the outlet equal at least 15 centimeters.
noun, Nautical. 1. any of the regulations concerning the safe handling of vessels under way with respect to one another, imposed by a government on ships in its own waters or upon its own ships on the high seas.
noun, Mathematics. 1. the method of finding the fourth term in a proportion when three terms are given. rule of three noun 1. a mathematical rule asserting that the value of one unknown quantity in a proportion is found by multiplying the denominator of each ratio by the numerator of the other