To ensure a better experience on ACFE.com, we strongly recommend you upgrade your browser to one that supports current standards. We recommend Internet Explorer 9 or newer, Chrome or Safari. If you are using Internet Explorer 9 or newer, we recommend turning off compatibility mode.
Product of sequences. The product operator for the product of a sequence is denoted by the capital Greek letter Pi â (in analogy to the use of the capital Sigma â as summation symbol). The product of a sequence consisting of only one number is just that number itself.
Full Definition of PRODUCT. 1. : the number or expression resulting from the multiplication together of two or more numbers or expressions. 2.a (1) : something produced; especially: commodity 1 (2) : something (as a service) that is marketed or sold as a commodity.3.: the amount, quantity, or total produced. 4.efinition of PRODUCT for Kids. 1. : the number resulting from the multiplication of two or more numbers. 2. : something resulting from manufacture, labor, thought, or growth.