unit - vari
- upper face
- upper half plane
- upper harmonic
- upper harmonics
- upper horizontal flue
- upper index
- upper laser level
- upper level lifetime
- upper limit
- upper limit of integration
- upper lip
- upper sample
- upper semi-continuous
- upper sideband
- upper yield point
- upper yield stress
- uprate
- uprated
- uprating
- upright still
