gen·er·al·is·si·mo 
(jĕn′ər-ə-lĭsə-mō′)
(jĕn′ər-ə-lĭsə-mō′)n. pl. gen·er·al·is·si·mos
The commander in chief of all the armed forces in certain countries.
[Italian, superlative of generale, a general, from Latin generālis, general; see GENERAL.]