OPNn.开
OPabbr.观测点(=Observation post)
Ophiopteron elegansn.美鳍棘蛇尾
Opisthorchis analis[医] 鸭后睾吸虫
Opioid intoxication阿片中毒
ophthalmia hepatica肝性眼炎
ophthalmic migraine眼性偏头痛
Ophiothrixnereidinan.美妙刺蛇尾
ophthalmic opticiann.(有眼科证书的)光学眼镜配镜师
Opuntia dilleniihaw仙人掌
op-tical parallax视差
ophthalmomicroscope检眼显微镜