*repetend*

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&dotted2_;8&dotted3_;), the repetend is 283. [ 1913 Webster ]