an Old World chronological period beginning around 10,000 years ago, situated between the Paleolithic and the Neolithic, and associated with the rise to dominance of microliths.
7000-4000BC (Britain) See TIMELINE
( Gr. 'meso'=middle + 'lithos'=stone) The period between the Palaeolithic and Neolithic periods, in the Old World spanning approx. 11,000 to 8000 BP.