Cure now means a remedy, an absolute termination of a disease. But it used to mean to take care of. From this sense we get the words curate and curator, positions of caring for souls and objects respectively. But why do we call meat that has been altered for preservation or just for the sake of taste cured? Curing meat involves salt, nitrates, nitrite or sugar. It probably has something to do with caring for the food to make sure it has been preserved.