13 letters · 21 points in Scrabble
noun defensive structure consisting of walls or mounds built around a stronghold to strengthen it
noun the art or science of strengthening defenses
noun the addition of an ingredient for the purpose of enrichment (as the addition of alcohol to wine or the addition of vitamins to food)
originBorrowed from Middle French fortification, from Late Latin fortificatio, fortificationem, from fortifico, from Latin fortis. By surface analysis, fort + -ification.
Etymology from Wiktionary, CC BY-SA 3.0