"Soterial" is an adjective meaning of or relating to salvation. It comes from the Greek word sōtēria, which means "deliverance" or "salvation". The term is often used to describe theological or biblical concepts, such as the soterial significance of religious events.
It is of more than incidental interest, with regard to the Search as this sort of gospel and prototype, that Roland Barthes found himself qualified to make certain reservations, certain criticisms, which do not alter his soterial purpose