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 |
|---|---|
| crestfallen | having a drooping crest or hanging head |
| prefatory | of, relating to, or constituting a preface |
| idiom | an expression in the usage of a language that is peculiar to itself either in having a meaning that cannot be derived from the conjoined meanings of its elements (such as up in the air for "undecided") or in its grammatically atypical use of words (such as give way) |
| stentorian | extremely loud |
| supersede | to cause to be set aside |
| viand | an item of food |
| puerile | juvenile |
| symmetry | balanced proportions |
| precarious | dependent on chance circumstances, unknown conditions, or uncertain developments |
| hierarchy | a division of angels |