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aspherical

American  
[ey-sfer-i-kuhl] / eɪˈsfɛr ɪ kəl /
Also aspheric

adjective

Optics.
  1. (of a reflecting surface or lens) deviating slightly from a perfectly spherical shape and relatively free from aberrations.


Etymology

Origin of aspherical

First recorded in 1920–25; a- 6 + spherical

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Larger fibers with optimized freeform and aspherical lens designs or a combination of lenses printed directly onto the fiber could help improve the output power.

From Science Daily Dec. 13, 2023

Sigma 24-70mm f/2.8 DG DN Art zoom lens $899 $1,099 19% off Sigma’s latest 24-70mm f/2.8 lens for mirrorless systems features three aspherical elements, a stepping motor for fast autofocus, and an 11-bladed aperture.

From The Verge Dec. 9, 2021

They still wonder whether the bulk of supernova explosions from the first generation were spherical or aspherical.

From Scientific American May 31, 2019

This oddity can be explained by an aspherical explosion of the supernova, Ezzeddine says.

From Scientific American May 31, 2019

As it eats, the phalarope moves its beak in a rapid tweezing motion, transforming food-laden droplets of water into aspherical shapes that are propelled up into its mouth.

From The New Yorker Dec. 21, 2015

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