nounprŏ-auctorPRO-AVCTOR☆ KeepMeaninga remote ancestorLewis & Short 1879ModernAs printed, 1879PROAUCTORLEWIS & SHORTPROAUCTORprŏ-auctor, ōris, m., I. a remote ancestor, founder (post-Aug.): generis sui proauctor, Suet. Claud. 24.Read the whole entry