desiˈnential,a. [f.med.L. dēsinentia(see desinent) + -al1.] Pertaining to, or of the nature of, a desinence or ending. 1818Monthly Mag. XLVI. 322 The desinential characteristics of the Latin noun.1869F. Hall in Lauder's Tractate 24 The desinential -it, for -ed[in Scotch pa.pples.]