Martial Syllabification: (Mar·tial)Pronunciation: /ˈmärSHəl/Definition of Martial (circa 40-circa ad 104), Roman epigrammatist, born in Spain; Latin name Marcus Valerius Martialis. His 15 books of epigrams, in a variety of meters, reflect all facets of Roman life. Martial in other Oxford dictionaries Definition of Martial in the British & World English dictionary