Multiply  v. (-ies, -ied) 1 (also absol.) Obtain from (a number) another that is a specified number of times its value (multiply 6 by 4 and you get 24). 2 increase in number, esp. By procreation. 3 produce a large number of (instances etc.). 4 a breed (animals). B propagate (plants). [latin multiplico: related to *multiplex]