astigmatism 2

noundomain: state

Princeton WordNet [ver.3.1]

English

Definition

(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point

Synonyms

astigmia 2
(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point

Antonym

stigmatism 2

noun

(optics) condition of an optical system (as a lens) in which light rays from a single point converge in a single focal point

Derivationally related form

astigmatic 1

adjective

of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images

Member_of_this_domain_-_TOPIC

optics 1

noun

the branch of physics that studies the physical properties of light