Rezervy

Rezervy is the plural form of reserve in several Slavic languages, including Ukrainian and Russian transliterations. It refers to quantities set aside for future use and is a common term across fields such as finance, energy, natural resources, military, and industry.

In finance, reserves are assets held to absorb shocks or support monetary stability. Central banks’ foreign exchange reserves typically include foreign currencies, gold, and special drawing rights, and they are used to influence exchange rates, cover imports, and maintain market confidence.

In energy and mining, reserves denote the portion of a resource that can be extracted profitably with current technology and prices. Reserves are distinguished from broader resources, and they are classified as proved (1P), probable (2P), or possible (3P), often measured in barrels, cubic meters, or tonnes.

Governments also maintain strategic reserves of critical goods—such as oil or grain—to ensure security during disruptions. The Strategic Petroleum Reserve in the United States is a well-known example. In business, reserves may refer to stock kept for contingencies or to reserves of capital and retained earnings on balance sheets.

In a military context, reserves are forces or matériel kept aside for mobilization, deployment, or surge operations.

Originating from the Latin reservare, meaning to keep back, the term reservy (rezervy) is used in Ukrainian and Russian transliterations; in Polish the form is rezerwy, and similar terms appear in other languages.