mul·ti·ply /ˈmʌltəˌplaɪ/
  (vt.)乘,使相乘;倍增(vi.)增加
  multiply
  乘;乘法	MLY;MPY
  multiply
  乘
  Mul·ti·ply v. t. [imp. & p. p. Multiplied p. pr. & vb. n. Multiplying ]
  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. [Obs.]
  Multiplying gear Mach., gear for increasing speed.
  Multiplying lens. Opt. See under Lens.
  Mul·ti·ply, v. i.
  1. To become greater in number; to become numerous.
     When men began to multiply on the face of the earth, and daughters were born unto them.   --Gen. vi. 1.
  2. To increase in extent and influence; to spread.
     The word of God grew and multiplied.   --Acts xii. 24.
  3. To increase amount of gold or silver by the arts of alchemy. [Obs.]
  ◄ ►
  multiply
       adv : in several ways; in a multiple manner; "they were multiply
             checked for errors" [ant: singly]
       v 1: combine by multiplication; "multiply 10 by 15" [ant: divide]
       2: combine or increase by multiplication; "He managed to
          multiply his profits" [syn: manifold]
       3: have young (animals); "pandas rarely breed in captivity"
          [syn: breed]
       4: have offspring or young; "The deer in our neighborhood
          reproduce madly"; "The Catholic Church tells people to
          procreate, no matter what their economic situation may be"
          [syn: reproduce, procreate]
       [also: multiplied]