adjective
optical
OP-tih-kuhl
adjective
1
Relating to sight, vision, or the science of light.
"An optical illusion tricks your brain into seeing something that isn't really there."
2
Working by means of light, especially visible light — as opposed to, say, electrical signals.
"The data travels through an optical fiber cable."
How to Use Optical
Learner’s notesIn plain EnglishRelated to sight or to devices and technology that use light.
Common pairings
optical illusion
optical fiber
optical zoom
Word Forms
more optical comparative, opticals plural, most optical superlative
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Fill the Gap
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An _____ illusion tricks your brain into seeing something that isn't really there.
Etymology
Formed from optic plus the adjective ending -al.