Definition of Melanchthonian in English:
Melanchthonian
(also Melancthonian)
adjective ˌmɛləŋkˈθəʊnɪən
Church History Of or relating to Melanchthon or his beliefs or opinions; Philippistic.
Origin
Late 17th century (in an earlier sense). From Melanchthon, classicized form corresponding to the German surname of Philipp Schwartzerd (lit. ‘black earth’), German humanist, theologian, and reformer + -ian.