1 tr. (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 intr. increase in number esp. by procreation.
3 tr. produce a large number of (instances etc.).
4 tr. a breed (animals). b propagate (plants).
Etymology: ME f. OF multiplier f. L multiplicare (as MULTIPLEX)
Useful english dictionary. 2012.