1925 39 594 The conception of wants as relative and time-dependent is of course not new in economic literature.
1962 D. R. Corson & P. Lorrain vi. 219 We shall now extend the discussion to include time-dependent magnetic fields.
2009 P. Glennie & N. Thrift iv. 120 Hackney coaches, given the level of their time-dependent fares, clearly catered for the relatively well-to-do.