Definitions for: Sempiternal

[adj] having no known beginning and presumably no end; "the dateless rise and fall of the tides"; "time is endless"; "sempiternal truth"

Webster (1913) Definition: Sem`pi*ter"nal, a. [L. sempiternus, fr. semper
always: cf. F. sempiternel.]
1. Of neverending duration; everlasting; endless; having
beginning, but no end. --Sir M. Hale.

2. Without beginning or end; eternal. --Blackmore.

Synonyms: dateless, endless, infinite