ASTIGMATISMS

Noun

astigmatisms

plural of astigmatism

Source: Wiktionary


ASTIGMATISM

A*stig"ma*tism, n. Etym: [Gr. astigmatisme.] (Med. & Opt.)

Definition: A defect of the eye or of a lens, in consequence of which the rays derived from one point are not brought to a single focal point, thus causing imperfect images or indistictness of vision.

Note: The term is applied especially to the defect causing images of lines having a certain direction to be indistinct, or imperfectly seen, while those of lines transverse to the former are distinct, or clearly seen.

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET




Word of the Day

11 January 2025

COWBERRY

(noun) low evergreen shrub of high north temperate regions of Europe and Asia and America bearing red edible berries


coffee icon

Coffee Trivia

In 1511, leaders in Mecca believed coffee stimulated radical thinking and outlawed the drink. In 1524, the leaders overturned that order, and people could drink coffee again.

coffee icon