Home › Words › P › protargolprotargolprotargol means silver proteinate, originally used as an antiseptic and later for staining in electron microscopy.EtymologyFrom German Protargol, from Pro(tein) + Latin arg(entum) (“silver”) + -ol.nounSilver proteinate, originally used as an antiseptic and later for staining in electron microscopy.Definitions & examples from Wiktionary (CC BY-SA 3.0).