regimental Syllabification: (reg·i·men·tal)Pronunciation: /ˌrejəˈmentl/Translate regimental | into German | into Italian | into Spanish Definition of regimental adjective of or relating to a regiment:a regimental band regimental colorsDerivatives regimentallyPronunciation: /-ˈmentl-ē/ adverb regimental in other Oxford dictionaries Definition of regimental in the British & World English dictionary