You searched for: “xerothermal period
Xerothermal Period (s) (noun) (no plural for this phrase)
1. A postglacial interval of warmer and drier climate; approximately equivalent to the Altithermal period or the Subboreal period.
2. A long phase of the postglacial geological history of Europe with a warm and dry climate: "The Xerothermal Period is chronologically corresponding to the end of the Atlantic and the beginning of the Subboreal period (4,000-5,000 years ago)."