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optics▼◼◼◼noun[UK: ˈɒp.tɪks] [US: ˈɑːp.tɪks]
physical optics▼◼◻◻noun[UK: ˈfɪ.zɪk.l̩ ˈɒp.tɪks] [US: ˈfɪ.zɪk.l̩ ˈɑːp.tɪks]
optically▼adverb[UK: ˈɒp.tɪk.l̩i] [US: ˈɑːp.tɪk.l̩i]
optometry▼noun[UK: apˈtɑː.mə.tri] [US: apˈtɑː.mə.tri]
chromatics▼noun[UK: krəʊ.ˈmæ.tɪks] [US: kroʊ.ˈmæ.tɪks]
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