supination supinate • supinator · · · Info · Definitions · Antonyms · Characters · · supination · · Text Latin · · Script 10 · · Length Definitions · · · (noun) rotation of the hands and forearms so that the palms face upward. · · Noun Definition 1 Antonyms · · · pronation · · Antonym 0 Characters · · a latin small letter a U+0061 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075