8 letters · 11 points in Scrabble
adjective below the dura mater but above the arachnoid membrane of the meninges
originEtymology tree Proto-Indo-European *upó Proto-Italic *supo Latin sub Latin sub-der. English sub- English dura Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālisbor. Old French -albor. ▲ Latin -ālis Old French -elbor. ▲ Latin -ālisbor. Middle English -al English -al English dural English subdural From sub- + dural.
Etymology from Wiktionary, CC BY-SA 3.0