Riss

noun
\ ˈris\
plural -es

Definition of Riss

 (Entry 1 of 2)

: the third stage of Pleistocene glaciation in Europe

Riss

adjective
\ "\
variants: or Rissian \ -​sēən \

Definition of Riss (Entry 2 of 2)

: of or relating to the Riss glaciation

History and Etymology for Riss

Noun

from the Riss river, tributary of the Danube in southwestern Germany

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