The compound adjective 'time-based' is a modern English formation, combining the ancient Germanic concept of 'time' with the Latinate concept of a 'base'. The word 'time' originates from Proto-Germanic 'tīmô', related to the idea of a stretch or period. The element '-based' derives from the Latin 'basis', meaning foundation, via Old French. The logical construction is transparent: something that is 'time-based' has its foundation, measurement, or primary determinant in the dimension of time. This reflects a conceptual shift where abstract temporal measurement becomes the foundational criterion for organizing activities, payments, or systems, moving from concrete bases to abstract, schedule-driven ones.

Structure: time (noun) + based (adjective suffix) - time: From Old English 'tīma', meaning a period, season, or era. In this compound, it functions as a noun root specifying the unit of measurement. - based: From the past participle of the verb 'base', meaning to found or establish on something. In this compound, it functions as an adjective-forming suffix meaning "having as a foundation or primary factor".