Synonyms: fortification
Definition: the addition of an ingredient for the purpose of enrichment (as the addition of alcohol to wine or the addition of vitamins to food)
Similar words: enrichment
Definition: act of making fuller or more meaningful or rewarding
Synonyms: fortification, munition
Definition: defensive structure consisting of walls or mounds built around a stronghold to strengthen it
Similar words: defence, defense, defensive structure
Definition: a structure used to defend against attack
Usage: the artillery battered down the defenses
Synonyms: fortification
Definition: the art or science of strengthening defenses
Similar words: prowess, art, artistry
Definition: a superior skill that you can learn by study and practice and observation
Usage: the art of conversation; it's quite an art