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	cast/shed/throw light on cast/spread one's net wide cast/throw doubt on cast/throw pearls before swine castabilities castability castable Castalia Castalian castalie castana castaneae castanean castaneas castaneous castanet castanets castanian castanopses Castanopsis castanopsises castanopsisses castanosperma Castanospermum castanospermums

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。