polyglacial
/ˌpɒlɪˈɡleɪʃl/ /ˌpɒlɪˈɡleɪsɪəl/Geology. Now rare
adjective
Designating the theory that postulates more than one glacial period during the Pleistocene epoch; comprising more than one glacial period.
Origin
1920s; earliest use found in Man: a monthly record of anthropological science. From poly- + glacial.