Douglas Harper's Etymology Dictionary
sado-masochism
also sadomasochism, 1916, from comb. form of sadism + masochism. Abbreviation S & M first attested 1965. An earlier word for sexualities that focused on violence was algolagnia (1900), Modern Latin, coined in German in 1892 by German doctor and paranormalist Albert von Schrenck-Notzing (1862-1929) from Greek algos "pain" + lagneia "lust."
Usage examples of "sado-masochism".
It's getting almost to feel natural, like a new kind of sado-masochism, the heat and the chills.
This was going to be the Deluxe Escorted Tour of Sado-Masochism to the max.