quiritarian,a.Rom. Law.|kwɪrɪˈtɛərɪən| [f. as next + -an.] = quiritary. 1842–3W. Smith's Dict.Gr. & Rom.Antiq.s.v.Legatum, The legatee had the quiritarian..ownership of the legacy.1861[see bonitarian].1871Poste Gaius iii. §80 Quiritarian ownership is only acquired by usucapion.