单词	optic disc
释义	optic disc noun variants or optic disk plural optic discs or optic disks : the small circular area at the back of the retina where the optic nerve enters the eyeball and which is devoid of rods and cones and is not sensitive to light : blind spot sense 1a Word History First Known Use 1858, in the meaning defined above Medical Definition optic disc noun variants or optic disk : blind spot
随便看	periwigged periwigging periwigpated periwigs periwinkle periwinkler periwinkles perizonia perizonium Perizzite perjink perjure perjure oneself perjured perjurer perjurers perjures rhythmicallier rhythmicalliest rhythmically rhythmiccer rhythmiccest rhythmicer rhythmicest rhythmicities

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