English

matground

From mat + ground.

A compound of mat + ground

Late Latin matta ‘mat made of rushes’

Old English meatte

Middle English matte

English mat

Proto-Indo-European *gʰrem- ‘floor, settlement’

Proto-Germanic *grunduz ‘ground, foundation’

Proto-West Germanic *grundu

Old English grund

Middle English ground

Today it means

noun The hard bacterial seafloor of the Proterozoic era.

Language periods are conventional ranges, not dates for this word.

Etymograph / matground