defunct /dɪˈfʌŋkt/adjective 5noun 1verb 1forms 5 adjective5 •No longer in use or active, nor expected to be again.[T]he engineer must solve the mysteries of boiler accidents by studying defunct structures of many different types. — 1880 •No longer in business or service, nor expected to be again; out of business. •Specifically, of a process: having terminated but not having been reaped (by its parent or an inheritor), and thus still occupying a process slot. See also zombie, zombie process. •(of a language) No longer spoken. •(no longer used) Deceased, dead.Morgante at a venture shot an arrow, / Which pierced a pig precisely in the ear, / And passed unto the other side quite through; / So that the boar, defunct, lay tripped up near. — 1820 noun1 •The dead person (referred to).A small tablet is fixt near the Altar, upon wᶜʰ the friends of yᵉ defunct lay their offerings in mony according to their own ability and the quality of the person deceased. — 1687 verb1 •To make defunct. formsdefuncted · defuncting · defuncts · more defunct · most defunct