Not quite right?
"Search similar patterns."
A__________
Definitions
(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
Word origin
From a- (negative prefix) + stem of Ancient Greek στίγμα (stígma, “mark, point”) + -ism. Coined by English polymath William Whewell in 1846.
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
No curated clues for astigmatism yet.