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orthodox
Orthodox Church
Orthodox Judaism
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orthogenesis
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orthogonal matrix
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orthoptics

or·thop·tics [ awr thóptiks ]


noun 
Definition:
 
nonsurgical correction of eye problems: the study of eye disorders and their detection and correction, especially using nonsurgical treatments such as eye exercises ( takes a singular verb )


or·thop·tic adjective
or·thop·tist noun
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