Decimal Dec"i*mal, n. A number expressed in the scale of tens; specifically, and almost exclusively, used as synonymous with a decimal fraction. Circulating, or Circulatory, decimal, a decimal fraction in which the same figure, or set of figures, is constantly repeated; as, 0.354354354; -- called also recurring decimal, repeating decimal, and repetend.

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.