WordReference Random House Learner's Dictionary of American English © 2015
gen•er•al•is•si•mo /ˌdʒɛnərəˈlɪsəˌmoʊ/USA pronunciation
n. [countable],pl. -mos.
Military(in certain countries) the supreme commander of the armed forces.
Collins Concise English Dictionary © HarperCollins Publishers::
generalissimo /ˌdʒɛnərəˈlɪsɪˌməʊ ˌdʒɛnrə-/ n ( pl -mos)
Etymology: 17th Century: from Italian, superlative of generale general
- a supreme commander of combined military, naval, and air forces, esp one who wields political as well as military power
'generalissimo' also found in these entries: