Tema (tāmə) [key], city (1984 pop. 99,608), SE Ghana, on the Gulf of Guinea. With the opening of an artificial harbor in 1961, Tema developed from a small fishing village to become Ghana's leading seaport and an industrial center. Most of the country's chief export, cacao, is shipped from Tema. Manufactures include aluminum, steel, refined petroleum, soap, processed fish, chocolate, textiles, cement, and chemicals.