n]
| 1. | the act of fortifying or strengthening. |
| 2. | something that fortifies or protects. |
| 3. | the art or science of constructing defensive military works. |
| 4. | Often, fortifications. military works constructed for the purpose of strengthening a position; a fort: Supposedly impregnable, the fortifications were quickly overrun. |
| 5. | a strengthening or improvement, as by addition of or intensification with another ingredient: the fortification of milk with vitamin D; the fortification of wine with alcohol. |