1Relating to or denoting the first climatic stage of the postglacial period in northern Europe, between the Younger Dryas and Boreal stages (about 10,000 to 9,000 years ago). The stage was marked by a rapid spread of birch and pine forests.
1.1as noun the PreborealThe Preboreal climatic stage.
Definition of Preboreal in US English:
Preboreal
adjectiveprēˈbôrēəl
Geology
1Relating to or denoting the first climatic stage of the postglacial period in northern Europe, between the Younger Dryas and Boreal stages (about 10,000 to 9,000 years ago). The stage was marked by a rapid spread of birch and pine forests.
1.1as noun the PreborealThe Preboreal climatic stage.