GRE Word List
ASTIGMATISM
a defect of an optical system (such as a lens) causing rays from a point to fail to meet in a focal point resulting in a blurred and imperfect image
The meaning of the word astigmatism is a defect of an optical system (such as a lens) causing rays from a point to fail to meet in a focal point resulting in a blurred and imperfect image.
Random words
| Word | Meaning |
|---|---|
| incursion | a hostile entrance into a territory : raid |
| mediate | occupying a middle position |
| unsightly | not pleasing to the sight : not comely |
| fissure | a narrow opening or crack of considerable length and depth usually occurring from some breaking or parting |
| coincidence | the act or condition of coinciding : correspondence |
| parley | to speak with another : confer |
| revulsion | a strong pulling or drawing away : withdrawal |
| virulent | marked by a rapid, severe, and destructive course |
| tint | a usually slight or pale coloration : hue |
| tractable | capable of being easily led, taught, or controlled : docile |