- A microcomputer small enough to use on one's lap.膝上型电脑，便携式电脑：小得足以放在膝盖上使用小型计算机
- optatives
- opted
- optic
- optic
- optical
- optical activity
- optical art
- Optical Art
- optical character reader
- optical character recognition
- optical computer
- optical disk
- optical fiber
- optical illusion
- optical isomer
- optical maser
- optical scanner
- optical tweezers
- optic axis
- optic chiasm
- optic chiasma
- optic cup
- optic disk
- optician
- opticians