Save Gender Feminine Usage English (Modern), Medieval French, Occitan, Medieval Occitan, Spanish (Rare), Italian (Rare) Pronounced Pron. gee-AHN-ah(English, Spanish) [key] Other Forms FormsGuyana Meaning & History Derived from Guyenne, an occasional Occitan corruption of Aquitaine. Guiana is also sometimes a spelling for the country of Guyana in South America.