The investigation and management of infertility has progressed radically since the advent of in vitro fertilization. It has ceased to be the province of the gynecologist alone, and often requires the co-operation of gynecologists, andrologists, endocrinologists, embryologists, 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 gynecological 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 gynecologist. This dictionary of reproductive medicine, the first of its kind, has been conceived to address the concerns of all of these groups.