Noun:

1. mature ovum after penetration by sperm but before the formation of a zygote

OOTn.面向对象技术OOabbr.面向对象的(=Object Oriented)Ootheca mantids nigra黑螵蛸oonceptual expression概念表达oolitic bank gas pool鲕滩气藏oocyte microinjection卵母细胞微注射OoO i want to runaway哦我想逃跑oor clip flooring clip木楼板龙骨夹Oon-line measurement在线检测OOO the distance OF TV远方电视台OOM - out of mana.没有魔法值。oonstruetion supervise工程建设监理