a process that fertilizes an egg from a woman outside her body. The egg is then put inside her uterus to develop. (the abbreviation for ‘in vitro fertilization’) see also test-tube baby体外受精(全写为 in vitro fertilization,使卵子在母体外受精后再放回子宫内发育) Oxford Collocations DictionaryIVF is used before these nouns:- clinic