ductile UK /ˈdʌk.taɪl/US /ˈdʌk.təl/ adjective3 •Capable of being pulled or stretched into thin wire by mechanical force without breaking.Gold is highly ductile, allowing it to be drawn into very fine wires.The ductile nature of copper makes it essential in electrical wiring. •Molded easily into a new form.their organisation was, by hereditary culture, much more ductile and more readily capable of acquiring knowledge than mine. — 1871 •(rare) Led easily; prone to follow. formsmore ductile · most ductile