verbcon-dūroCON-DVRO☆ KeepMeaningto harden, to make very hardLewis & Short 1879ModernAs printed, 1879CONDUROLEWIS & SHORTCONDUROcon-dūro, āre, I. v. a., to harden, to make very hard: ferrum, Lucr. 6, 969.Read the whole entry