Main Entry: sem·pi·ter·nal

Pronunciation: \ˌsem-pi-ˈtər-n^əl\

Function: adjective

Etymology: Middle English, from Late Latin sempiternalis, from Latin sempiternus, from semper ever, always, from sem- one, same (akin to Old Norse samr same) + per through — more at same, for

Date: 15th century

: of never-ending duration : eternal

— sem·pi·ter·nal·ly adverb