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optic chiasma
optic cup
optic disk
optic nerve
optic vesicle
optical
optical activity
optical art
optical brightener
optical character reader
optical character recognition
optical computer
optical disk
optical double star
optical fiber
optical glass
optical illusion
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optical brightener
op·ti·cal bright·en·er (plural op·ti·cal bright·en·ers)


noun 
Definition:
 
chemical color enhancer: a chemical substance used to make the whiteness or color of fabrics brighter, e.g. in laundry detergents
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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