[ op-ti-kuh l ]
/ ˈɒp tɪ kəl /



opticals. optical effects.

Origin of optical

First recorded in 1560–70; optic + -al1

Related forms

Definition for optical (2 of 2)

optical effects

plural noun Movies, Television.

special visual effects, as the wipe or dissolve, created in the camera or especially in a film laboratory by technicians using complex optical and electronic equipment.

Also called opticals.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for optical

British Dictionary definitions for optical


/ (ˈɒptɪkəl) /


of, relating to, producing, or involving light
of or relating to the eye or to the sense of sight; optic
(esp of a lens) aiding vision or correcting a visual disorder

Derived Forms

optically, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for optical


[ ŏptĭ-kəl ]

Relating to vision or the eyes.
Relating to optics.
Relating to or using visible light.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.