FlandrianPronunciation: /ˈflɑːndrɪən/Definition of Flandrian adjective Geology relating to or denoting the current (Holocene or Recent) stage in northern Europe, especially when treated as an interglacial period. (as noun the Flandrian) the Flandrian interglacial or the system of deposits laid down during it. Origin: mid 17th century: from Flanders + -ian