Webster’s Revised Unabridged Dictionary · 1913
Penteconter
Pen′te·con′ter (pĕn′tē·kŏn′tẽr), n. [Gr. πεντηκόντορος (sc. ναῦς), fr. πεντήκοντα fifty.] (Gr. Antiq.) A Grecian vessel with fifty oars. [Written also pentaconter.]
Webster’s Revised Unabridged Dictionary · 1913
Pen′te·con′ter (pĕn′tē·kŏn′tẽr), n. [Gr. πεντηκόντορος (sc. ναῦς), fr. πεντήκοντα fifty.] (Gr. Antiq.) A Grecian vessel with fifty oars. [Written also pentaconter.]