Macroorchidism means: Macroorchidism is abnormally large testes. An orchidometer allows the measurement of testes to determine whether they are excessively large. It is a tool that lets a testis be compared with a number of ovals, similar to miniature American footballs. Macroorchidism, which is the most prevalent inherited form mental retardation, can be used as a diagnostic tool. Microorchidism, which is the opposite of macroorchidism, can be found.
(in Medical Dictionary)