The investigation and management of infertility has progressed radically since the advent of in vitro fertilisation. It has ceased to be the province of the gynaecologist alone, and the practice of modern fertility medicine may require the co-operation of gynaecologists, andrologists, endocrinologists, embyologists, geneticists, general scientists, psychologists, radiologists, nurses, ultrasonographers, social workers, medical administrators, and lawyers. Many of these do not have a medical background and fewer still have knowledge of the gynaecological terms which are still in predominant use. Furthermore, scientific advances have led to the introduction of techniques and terms unfamiliar to the non-scientist, including the gynaecologist. This dictionary of reproductive medicine, the first of its kind, has been conceived to address the concerns of all of these groups.