Definition of "UPS"

UPS

noun
countable and uncountable, plural UPSes
1. (electronics) Initialism of uninterruptible power supply/source
2. Initialism of ultraviolet photoelectron spectroscopy.
3. (biochemistry) Initialism of ubiquitin-proteasome system.
verb
third-person singular simple present UPSes, present participle UPSing, simple past and past participle UPSed
1. (electronics, nonstandard) To connect a device to an uninterruptible power supply
proper noun
1. Initialism of United Parcel Service.