Webster’s Revised Unabridged Dictionary · 1913 Centigram Cen′ti·gram (sĕn′tĭ·grăm), Cen′ti·gramme, n. [F. centigramme; centi- (L. centum) + gramme. See Gram.] The hundredth part of a gram; a weight equal to .15432 of a grain. See Gram. ‹ Centigrade Centiliter ›