/ay sfer"i keuhl/ , adj. Optics.
(of a reflecting surface or lens) deviating slightly from a perfectly spherical shape and relatively free from aberrations.
Also, aspheric .
[ 1920-25; A- 6 + SPHERICAL ]
/ay sfer"i keuhl/ , adj. Optics.
(of a reflecting surface or lens) deviating slightly from a perfectly spherical shape and relatively free from aberrations.
Also, aspheric .
[ 1920-25; A- 6 + SPHERICAL ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012