OMRn.光学标志读出器(光学指示读出器)
OMabbr.功绩勋章(=Order of Merit)n.[印度教]唵(最主要和最神圣的一个音节)
Omocestus nyalamusn.聂拉木牧草蝗
omasum obstruction第三胃梗塞
Omocestus petraeusn.曲线牧草蝗
Ombrocharis dulcisn.喜雨草
omphalomonodidymus脐部联胎
Omphalopagus twins联体儿
omnochrome pigment[医] 昆虫色素
ombrophobous plant避雨植物
omparison shopping比较购物
omphaloportography脐门静脉造影