Definify.com
Webster 1913 Edition
Sempiterne
Sem′pi-terne
,Adj.
 Sempiternal. 
[Obs.] 
Definition 2025
sempiterne
sempiterne
English
Adjective
sempiterne (not comparable)
-  (obsolete) sempiternal; everlasting
-  John Gower, Confessio Amantis
- And his beinge is sempiterne.
 
 
 -  John Gower, Confessio Amantis
 
Latin
Adjective
sempiterne
- vocative masculine singular of sempiternus
 
References
- sempiterne in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
 - Félix Gaffiot (1934), “sempiterne”, in Dictionnaire Illustré Latin-Français, Paris: Hachette.