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The Collaborative International Dictionary of English v.0.48 (gcide)

Multiply \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.
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Impunity will multiply motives to disobedience.
--Ames.
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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}.
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3. To increase (the amount of gold or silver) by the arts of
alchemy. [Obs.]
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{Multiplying gear} (Mach.), gear for increasing speed.

{Multiplying lens}. (Opt.) See under {Lens}.
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