what is in vitro fertilization definition?
<answer> In vitro fertilisation is a process of fertilisation where an egg is combined with sperm outside the body, in vitro. <context> In vitro fertilisation (IVF) is a process of fertilisation where an egg is combined with sperm outside the body, in vitro (in glass). The process involves monitoring and stimulating a woman's ovulatory process, removing an ovum or ova (egg or eggs) from the woman's ovaries and letting sperm fertilise them in a liquid in a laboratory.