Fortified castle outwork. Definition of 'fortified' fortified in British English (ˈfɔːtɪˌfaɪd ) adjective The meaning of FORTIFIED is made stronger or more secure. The meaning of FORTIFIED is made stronger or more secure. Toxic substances are sometimes used to fortify illicit spirits. to impart strength or vigor to: had fortified myself with a good breakfast. By adopting good exercise habits, you can fortify your body against illness. How to use fortified in a sentence. See examples of FORTIFIED used in a sentence. Foods can be fortified by adding vitamins, but "fortified wines", such as sherry and port, have brandy (a "stronger" drink) rather than vitamins added to them. fortified (ˈfɔːtɪˌfaɪd) adj 1. Definition of 'fortified' fortified in British English (ˈfɔːtɪˌfaɪd ) adjective. strengthened physically, mentally, or morally Fortified definition: protected or strengthened against attack; provided with defensive military works. Learn more. . The wine is fortified by the addition of neutral grape brandy, killing the yeasts and preventing further fermentation. to increase the effectiveness of, such as by additional ingredients: to fortify a diet with vitamins. (of a food) with vitamins…. FORTIFIED definition: 1. (of a place) defensible, due to walls, trenches, etc 2. FORTIFIED is a voluntary construction and re-roofing Program designed to strengthen homes and commercial buildings against specific types of severe weather such as high winds, hail, hurricanes and even tornadoes. fortify something (against somebody/something) to make a place more able to resist attack, especially by building high walls a fortified town They fortified the area against attack. made stronger against attack, for example with high, strong walls: 2. bp5no z3u2hf s1dpy mfk mvl bnm2 z7plork df voy 2os4