Middle English word dedicacioun comes from Latin dedicatio (Dedication, consecration.), English -ion, English dedicatus

Detailed word origin of dedicacioun

Dictionary entry	Language	Definition
dedicatio	Latin (lat)	Dedication, consecration.
-ion	English (eng)	(non-productive) a state or condition. (non-productive) an action or process, or the result of an action or process.
dedicatus	English (eng)
dedicacion	Old French (fro)
dedicacioun	Middle English (enm)

Words with the same origin as dedicacioun