one- - over
- Orsat analyzer
- orthodox type
- orthogonal system
- orthohexagonal
- orthorhombic cell
- orthorhombic lattice
- orthorhombic packing
- orthosilicic acid
- osc.
- oscillating centrifuge
- oscillating circuit coil
- oscillating circular saw
- oscillating coil
- oscillating combustion
- oscillating die press
- oscillating disk method
- oscillating extractor
- oscillating launder
- oscillating mold
- oscillating motion
- oscillating riddle
- oscillating sampler
- oscillating separator
- oscillating single crystal
- oscillating sphere method
- oscillating table
- oscillating undercutting nozzle
- oscillating-base fan
- oscillating-crystal (X-ray) pattern
- oscillating-crystal camera
- oscillating-crystal method
- oscillation mode
- oscillation of crystal
- oscillation of pendulum
- oscillation X-ray diagram
- oscillation X-ray spectrum
- oscillatory mode (of motion)
- oscillographic recording
- oscillography
- oscilloscope