nth / en[unvoicedth]/ • adj. Math. denoting an unspecified member of a series of numbers or enumerated items: systematic sampling by taking every nth name from the list. ∎ (in general use) denoting an unspecified item or instance in a series, typically the last or latest in a long series: for the nth time that day they were forced to relate the whole story. PHRASES: to the nth degree to the utmost: the gullibility of the electorate was tested to the nth degree by such promises.
"nth." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (September 18, 2018). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/nth-3
"nth." The Oxford Pocket Dictionary of Current English. . Retrieved September 18, 2018 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/nth-3