the GNU version of the Collaborative International Dictionary of English
n. The hundredth part of a gram; a weight equal to .15432 of a grain. See gram.
The Century Dictionary and Cyclopedia
n. A measure of weight in the metric system, the hundredth part of a gram, or 0.15432 grain troy. See gram. Also spelled centigramme.
Word Usage
"There is only one remedy, a minimum dose, a half-centigram of acetate of morphine taken every evening after digesting your dinner, for a week at least."