optical
Pronunciation
Adjective
A2 Elementary
Quick answer
Relating to sight or to devices that use light, such as lenses.
Usage notes
"Optical illusion" is a common fixed phrase for something that tricks your eyes into seeing it incorrectly.
Test yourself
Which word fits the gap? "The store sells _____ equipment like microscopes and telescopes."
Answer: optical
In your own words, what does "optical" mean?
Relating to sight or to devices that use light, such as lenses.
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