A nuclear stress test is a noninvasive means of detecting the presence and/or signiï¬ cance of coronary. artery disease. Coronary artery disease is a condition in which there is narrowing or blockage of the blood. vessels supplying the heart muscle. This can cause chest pain which is known as angina pectoris.
coefficient. n. 1. (Mathematics) maths. a. a numerical or constant factor in an algebraic term: the coefficient of the term 3xyz is 3. b. the product of all the factors of a term excluding one or more specified variables: the coefficient of x in 3axyz is 3ayz.
coefficient. noun. 1  A number or symbol multiplied with a variable or an unknown quantity in an algebraic term, as 4 in the term 4 x, or x in the term x (a &plus; b). 2  A numerical measure of a physical or chemical property that is constant for a system under specified conditions, such as the coefficient of friction.