Geology. Earlier or older than a period of deposition of diluvial or drift deposits (originally identified with the biblical Flood: cf. diluvial, adj.…

†(a) involving both the mind and the living body; psychosomatic (obsolete); (b) Geology (now rare) designating or relating to the period of…

Geology. Designating any of various periods of relatively high average rainfall in low and intermediate latitudes, esp. during the Pleistocene…

Anthropology. In the terminology of J. W. Dawson: designating the geological period following the Pleistocene in which human remains and artefacts…

Geology. Of, relating to, or designating the Ozarkian epoch. Now disused.

Physical Geography. Of, relating to, or characteristic of the central period in a cycle of erosion, during which the widest diversity of…

Designating any of the periods of generally drier conditions in equatorial latitudes during the geological past (esp. the Pleistocene) which…

Of or relating to the Rhaetic and Liassic stages or series. Also as noun: the series themselves.

Of, pertaining to, or designating relatively short, drier periods (less marked than interpluvials) that may have occurred during pluvials.