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aspherical

[ ey-sfer-i-kuhl ]
/ eɪˈsfɛr ɪ kəl /
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adjective Optics.

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

QUIZZES

QUIZ YOURSELF ON “ITS” VS. “IT’S”!

Apostrophes can be tricky; prove you know the difference between it’s and its in this crafty quiz!
Question 1 of 12
On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.
Also a·spher·ic [ey-sfer-ik] /eɪˈsfɛr ɪk/ .

Origin of aspherical

First recorded in 1920–25; a-6 + spherical
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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