ultr - Unit
- ultra
- Ultra Direct Memory Access
- Ultra Direct Memory Access (UDMA)
- ultra high frequency
- ultra violet
- ultra vires
- ultra-Orthodox
- ultracentrifuge
- ultraconservative
- ultrahigh
- ultrahigh frequency
- ultraism
- ultraist
- ultraleft
- ultralight
- ultramarine
- ultramicroscope
- ultramicroscopic
- ultramicroscopically
- ultramicroscopy