The origin of this village's name is divided: some say it comes from the Arabic Mamona, meaning "fertile valley"; others, from the Roman anthroponym Mioma, owner of an ancient villa. What is certain is that the place has been inhabited since the Bronze Age, as evidenced by the star found with engravings of warriors. Interestingly, the Meimoa dam is named after the stream... but the water only spreads through the Meimão region.