Centigrade \Cen"ti*grade\, a. [L. centum a hundred + gradus degree: cf. F. centigrade.]

Consisting of a hundred degrees; graduated into a hundred divisions or equal parts. Specifically: Of or pertaining to the centigrade thermometer; as, 10[deg] centigrade (or 10[deg] C.).

Centigrade thermometer, a thermometer having the zero or 0 at the point indicating the freezing state of water, and the distance between that and the point indicating the boiling state of water divided into one hundred degrees. It is called also the Celsius thermometer, from Anders Celsius, the originator of this scale.

Source: Webster's Revised Unabridged Dictionary (1913)