Doména

Doména is a noun used in Czech and Slovak for "domain" or "realm," referring to a bounded area of influence, activity, or knowledge. The term also appears in several other languages with similar spellings: Polish domena, Romanian domenă, and the cognate French/English pair domain. It is commonly used in academic, technical, and formal contexts, and in modern computing it refers to both domain names and network domains.

Etymology and related forms: Doména derives from Latin dominium (ownership, property) via Old French domaine, and is cognate with the English word domain. The sense of an area or sphere of control has persisted across languages.

Fields and usage: In mathematics, doména denotes the set of input values for which a function is defined. In linguistics and philosophy, it can describe the scope of discourse or the set of entities covered by a theory. In everyday language, it also refers to the area of activity, responsibility, or influence of a person, organization, or policy.

Information technology: In IT, doména commonly refers to a domain name—the human-readable label in a DNS hierarchy—and to a domain used for organizing computers within a network, such as a Windows domain. The term also appears in discussions of internet infrastructure, governance, and cybersecurity, where it denotes a distinct administrative or naming space within a larger system.