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
adventitiouscoming from another source and not inherent or innate
conversanthaving knowledge or experience
inanelacking significance, meaning, or point : silly
extenuateto lessen or to try to lessen the seriousness or extent of (something, such as a fault or offense) by making partial excuses : mitigate
obviateto anticipate and prevent (something, such as a situation) or make (an action) unnecessary
absolutefree from imperfection : perfect
valedictionan act of bidding farewell
downcastlow in spirit : dejected
savoryhaving savor: such as
bewitchto influence or affect especially injuriously by witchcraft