Definition of ab aeterno in US English:

ab aeterno

(also ab eterno)

adverb

  • From eternity, from the beginning of time; from the most remote antiquity. Now somewhat rare.

Origin

Late 16th century. From post-classical Latin ab aeterno (Vulgate) from classical Latin ab from + aeternō, ablative of aeternum eternity, use as noun of neuter of aeternus eterne.

Pronunciation

ab aeterno

/ab iːˈtəːnəʊ/