Pretoria Syllabification: (Pre·to·ri·a)Pronunciation: /prəˈtôrēə/Definition of Pretoria the administrative capital of South Africa; population 1,679,200 (est. 2009). It was founded in 1855 by Marthinus Wessel Pretorius (1819–1901), the first president of the South African Republic, and named after his father Andries. Pretoria in other Oxford dictionaries Definition of Pretoria in the British & World English dictionary