This is the 9160th most frequent French word.
consacrer
To dedicate or devote.
In this sentence, 'consacrer' is used to indicate dedicating or allocating time to an activity.
Je consacre du temps à mes études chaque jour.
I dedicate time to my studies every day.
Here, 'consacré' (past participle of consacrer) means that the book's focus or subject is dedicated to a specific topic.
Ce livre est consacré à l'histoire ancienne.
This book is dedicated to ancient history.
In this example, 'consacrer' is used with the notion of devoting one's life or efforts toward a noble cause or goal.