Source : Webster's Revised Unabridged Dictionary (1913)

Repetend \Rep`e*tend\ (r?p`?-t?nd"), n. [L. repetendus to be
   repeated, fr. repetere to repeat.] (Math.)
   That part of a circulating decimal which recurs continually,
   ad infinitum: -- sometimes indicated by a dot over the first
   and last figures; thus, in the circulating decimal .728328328
   + (otherwise .7..8...), the repetend is 283.