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In all the world, Atonia (Atonia , Atony ) is a rare unisex forename. The forename Atonia is habitual in Grenada, where it is quite a common girly name, Nigeria, where it is a very rare epicene name, and Spain, where it is a very rare mostly female, but seldom masculine name. Measured by absolute frequency, it is the most numerous in Nigeria, the United States, and Brazil. Likewise, Atonia is the last name as well as the forename.