9 letters · 14 points in Scrabble
noun latest part of the Stone Age beginning about 10,000 BC in the Middle East (but later elsewhere)
adjective of or relating to the most recent period of the Stone Age (following the mesolithic)
originFrom neo- + -lithic. Coined by English banker, Liberal politician, philanthropist, scientist and polymath John Lubbock, 1st Baron Avebury, in 1865 as a refinement of the three-age system.
Etymology from Wiktionary, CC BY-SA 3.0