- noun a power supply that uses a battery and can continue to provide a regulated supply to equipment even after a mains power failure.
- Abbreviation of uninterruptible power supply, uninterruptible power system, or uninterruptible power source.
- acronym foruninterruptible power source
- acronym foruninterruptible power system
- acronym forultraviolet photoelectron spectroscopy
- acronym forUnited Parcel Service
- acronym foruninterruptable power supply