early 15c., from Middle French optique, obtique (c. 1300) and directly from Medieval Latin opticus "of sight or seeing," from Greek optikos "of or having to do with sight," from optos "seen, visible," from op-, root of opsesthai "be going to see," related to ops "eye," from PIE *okw- "to see" (see eye (n.)).
实用例句
1. The reason for this is that the optic nerve is a part of the brain.
这其中的原因在于视神经是大脑的一部分。来自柯林斯例句
2. But with fiber - optic cables, television will become truly interactive.
但是,有了光纤电缆, 电视就可以真正成为交互式的.来自百科语句
3. Retinal hemorrhage, and blurring of the optic dise cause visual disturbances.
视网膜出血及神经盘模糊等可导致视力障碍.来自辞典例句
4. We first take up the subject of optic ray propagation through a variety of optical media.
首先研究光束通过各种光学介质的传播问题.来自辞典例句
5. Crystals of this type , having only one optic axis, are called uniaxial crystals.
