Mul″ti‐ply (?), v. t. [imp. & p. p.Multiplied (?); p. pr. & vb. n.Multiplying (?).] [F. multiplier, L. multiplicare, fr. multiplex manifold. See Multitude, Complex.] 1. To increase in number; to make more numerous; to add quantity to.
Impunity will multiply motives to disobedience. Ames.
2. (Math.) 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.
Multiplying gear(Mach.), gear for increasing speed. — Multiplying lens. (Opt.) See under Lens.