Definition of Preboreal in English:

Preboreal

adjective

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. 1.1The Preboreal climatic stage.

Pronunciation:

Preboreal

/prēˈbôrēəl/