The Collaborative International Dictionary of English v.0.48:

Centigram \Cen"ti*gram\, Centigramme \Cen"ti*gramme\, n. [F.
   centigramme; centi- (L. centum) + gramme. See Gram.]
   The hundredth part of a gram; a mass equal to .15432 of a
   grain. See 3rd Gram.
   [1913 Webster] Centiliter