Meaning

noun a period of time when something (as a machine or factory) is functioning and available for use

originEtymology tree Proto-Indo-European *upó Proto-Germanic *ub Proto-Germanic *upp Proto-West Germanic *upp Old English upp Middle English up English up Proto-Indo-European *deh₂-der. Proto-Indo-European *deh₂y- Proto-Indo-European *-mṓ Proto-Indo-European *dh₂i-mon- Proto-Germanic *tīmô Proto-West Germanic *tīmō Old English tīma Middle English tyme English time English uptime From up (“(computing)…

Etymology from Wiktionary, CC BY-SA 3.0