| optic axis | |
| —n | |
| the direction in a uniaxial crystal or one of the two directions in a biaxial crystal along which a ray of unpolarized light may pass without undergoing double refraction | |
| a scrap or morsel of food left at a meal. |
| a chattering or flighty, light-headed person. |
optic axis n.
The line connecting the anterior and the posterior poles of the eye.