nth
/enθ/adjective
1- Mathematics【数】denoting an unspecified member of a series of numbers or enumerated items第n个的（指一连串数字中某一个的或一一列举的东西中的某一个的）：
systematic sampling by taking every nth name from the list.
从名单中每隔几个名字取一个的系统抽样。
1.1
- (in general use) denoting an unspecified item or instance in a series, typically the last or latest in a long series（作为普通用语指一长串事例中的某一项或某一次, 通常指最近或最后的一项或一次）第n项的, 第n次的; 多次的; 在多次发生后的又一次的：
he had just been booted out of his digs for the nth time.
他刚从住所被又一次撵了出来。
短语
to the nth degree
- to the utmost极度地; 在最大程度上：
the gullibility of the electorate was tested to the nth degree by such promises.
选民已被此种许诺愚弄了无数次。