astigmatic
UK[ˌæstɪɡˈmætɪk]US[ˌæstɪɡˈmætɪk]
adj
Relating to or affected with astigmatism, a defect in the eye or a lens that prevents proper focusing.
adj
(figurative) Not seeing or understanding clearly; lacking clear perception or discernment.
Morpheme Breakdown
a
stigma
tic
a
without
stigma
point
tic
adjective suffix
Etymology
The word 'astigmatic' is built upon the Greek negation 'a-' and the noun 'stigma,' meaning a point or spot. In optical terminology, astigmatism is literally the condition of being "without a point," referring to the eye's inability to focus light rays to a single point on the retina, resulting in blurred vision. The adjective suffix '-tic' was appended to form a descriptive term. This literal optical meaning was later extended metaphorically to describe a mental or intellectual lack of focus or clarity.
Analysis
Structure: a (without) + stigma (point) + tic (adjective suffix)
a: A Greek prefix meaning "without" or "not."
stigma: From Greek stigma, meaning "a point," "a mark," or specifically "the point of a pointed instrument."
tic: A common English adjective-forming suffix, often from Greek -tikos, indicating a relation to or characteristic of.
Examples
He wears special glasses to correct his astigmatic vision.
The astigmatic lens distorted the image at the edges.
Her astigmatic view of the company's problems prevented her from proposing an effective solution.