n. A refrain (having repeated words, sounds or phrases)
n. A repeating decimal
the GNU version of the Collaborative International Dictionary of English
n. 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.
The Century Dictionary and Cyclopedia
n. In arithmetic, that part of a repeating decimal which recurs continually; the circulate.
n. Something which is or has to be repeated, as the burden of a song.
Word Usage
"True, America is free; but in order to establish tradition some one must be a repetend--a repeating decimal."