acquis communautaire
Acquis communautaire is the accumulated set of EU rules, standards, and institutional practices that a country must adopt and enforce when it joins the Union. It covers areas such as the internal market, trade, economic regulation, and the operation of EU policies, and it continues to evolve through new legislation and judicial decisions.
Source: European Central Bank (ECB) (source). This glossary entry is an independently worded adaptation of the cited information.