optical

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optical absorbance electron optics enantiomer optical activity optical antipode optical axis optical center optical density optical fiber optical glass optical illusion optical isomer optical isomerism optical maser optical path optical rotation

Main Entry: op·ti·cal
Pronunciation: äp-ti-kl
Function: adjective
1 : of or relating to the science of optics
2 a : of or relating to vision : VISUAL b : using the properties of light to aid vision <an optical instrument>
3 : of, relating to, or utilizing light <optical microscopy>