The Full form of O.S. is left eye (ocularis/oculus sinister (Lat.), or O.S. stands for left eye (ocularis/oculus sinister (Lat.), or the full name of given abbreviation is left eye (ocularis/oculus sinister (Lat.).
O.S. (left eye (ocularis/oculus sinister (Lat.))
left eye (ocularis/oculus sinister (Lat.) is known as O.S..
O.S. all full forms
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