multiply

multiply is a Verb

Definition:

[1] To increase in number; to make more numerous; to add quantity to. Impunity will multiply motives to disobedience. Ames.

[2] To add (any given number or quantity) to itself a certain number of times; to find the product of by multiplication; thus 7 multiplied by 8 produces the number 56; to multiply two numbers. See the Note under Multiplication.

[3] To increase (the amount of gold or silver) by the arts of alchemy. [Obs.] Multiplying gear (Mach.), gear for increasing speed. -- Multiplying lens. (Opt.) See under Lens.