Ducatus

Part of speech: noun

Definitions

1. A historical term referring to a duchy or the territory ruled by a duke
2. representing a feudal domain governed by noble rank
3. also signifies the office or title associated with such rule

Etymology: "Ducatus" is the Latin noun for the office, rank, or territory of a "dux," a military commander or leader, and from it English gets "duchy" and "duchess" through Old French. The dux itself is a Latin word built on "ducere," "to lead," the same root that gives English "duke" its origin in that office of leadership. Over the Roman period, a dux came to mean a commander of troops in a region, and the sense of rule over a defined territory followed naturally from holding authority in a place. In medieval Latin, "ducatus" was used for the domain a duke governed, so the word came to mean a feudal lordship held by a noble of ducal rank rather than merely the rank itself. This territorial sense is the one that survives in the form "duchy" in English, and the Latin form remains the standard term in historical and legal writing about such domains.

Synonyms: duchy, duke's domain