Of or relating to a domain.

A geographic area owned or controlled by a single person or organization. / A field or sphere of activity, influence or expertise. / A group of related items, topics, or subjects.

plural of domainer

An individual or company that engages in the buying, selling, marketing, monetization and publishing of Internet domain names.

(wine) A vineyard or wine estate, especially in France.

plural of domain

(in combination) Having a specified kind or number of domains.

plural of domaine

(Internet) The buying and selling of domain names. / The identification of anthropological (and other) domains.

(physics) An interface separating magnetic domains. / (astrophysics) A two-dimensional singularity hypothesized in string theory.