[=onset and course(of a disease)](疾病的)起始和经过

[=onset and course(of a disease)](疾病的)起始和经过

[=oestrogen:creatinine ratio]雌(甾)激素与肌酸酐比率

[=ochre(suppressor)]赭石(抑制剂)

[=occlusocervical]咬合颈的
[=occult cancer]隐性癌
[=old controls]老年对照组
[=onset and cause](疾病的)发生与原因
[=onset and course](疾病的)起始和经过
[=opening click]开放卡嗒音,开放喀喇声
[=optic chiasm]视交叉,视神经交叉
[=oral cavity]口腔
[=oral cholecystography]口服胆囊造影术
[=oral contraceptive(s)]口服避孕药
[=organ culture]器官培养
[=osteocalcin]骨钙素
[=otic capsule]耳囊
[=outer canthus]外眦
[=ovarian cancer]卵巢癌
[=oxygen closed]氧闭锁式(麻醉)
[=oxytocin]催产素

ɑk-,әk-; ɒk-,әk-< oc- >
(字首) ob- 的变体, 用於 c 之前