成套 chéngtào form a set Origin Definitions Defs Strokes Stroke Words Sentences Sents chéngtào form a set 成 chéng verbparticle to become to become; to turn into; to change into套 tào measure word [set] Used for sets, series, collections, or suites of things.chéngtào complete 成 chéng noun established (bound form) ready-made; fixed; existing套 tào measure word [set] Used for sets, series, collections, or suites of things.