Stradivarius /ˌstɹædɪˈvɛəɹi.əs/ noun3 •A stringed instrument built by members of the Stradivari family, particularly Antonio Stradivari. •(figurative) A name invoked as a standard of excellence in unrelated fields.A Bath boat is the Stradivarius of destroyers! •A violin made by another manufacturer, named to capitalise on the fame of the instruments made by Antonio Stradivari. formsStradivarii · Stradivariuses