(military history, rare) The selection by lot of every hundredth man (of an army or group of prisoners or mutineers) for execution.
Sometimes the criminals were decimated by lot, as appears in Polybius, Tacitus, Plutarch, Appian, Dio, Julius Capitolinus, who also mentions a centesimation.
1897, The Columbian Cyclopedia VI, “centesimate”
To inflict the punishment of centesimation.