mul·ti·pli·ca·tion 
(mŭl′tə-plĭ-kāshən)
(mŭl′tə-plĭ-kāshən)n.
1. The act or process of multiplying or the condition of being multiplied.
2. Propagation of plants and animals; procreation.
3. Mathematics
a. The operation that, for positive integers, consists of adding a number (the multiplicand) to itself a certain number of times. The operation is extended to other numbers according to the multiplicative properties of positive integers and other algebraic properties.
b. Any of certain analogous operations involving mathematical objects other than numbers.
mul′ti·pli·cation·al adj.