external fertilization,
the fertilization of an egg, especially a human ovum, outside the body, usually by the introduction of sperm into an egg cell surgically removed from an ovary: ยป
The so-called test-tube babies were of course not monsters but simply ordinary babies produced by external fertilization (John Newell). Some clergymen saw no ethical problems in external fertilization: others called it interference with nature (Albin Krebs).
Useful english dictionary. 2012.