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

WordMeaning
futileserving no useful purpose : completely ineffective
desperadoa bold or violent criminal
existentialof, relating to, or affirming existence
oratorioa lengthy choral work usually of a religious nature consisting chiefly of recitatives, arias, and choruses without action or scenery
disperseto cause to break up (see break up
reproveto scold or correct usually gently or with kindly intent
lucidsuffused with light : luminous
accrueto come into existence as a legally enforceable claim
simulateto give or assume the appearance or effect of often with the intent to deceive : imitate
peregrinationto travel especially on foot : walk