non-conˈtagious,a. [non- 3.] Not contagious or propagated by contagion. So non-conˈtagiousness= non-contagion. 1817W. Taylor in Monthly Mag. XLIV. 313 Certificates of non-contagiousness.1845R. Williams Princ.Med. in Encycl.Metrop. VII. 817/1 The evidence of the non-contagious nature of cholera.