Nationwide means happening or existing across an entire nation, from coast to coast and border to border. When a store has nationwide locations, you can find its shops throughout the whole country. When a news story goes nationwide, people are talking about it everywhere, not just in one city or region.

The word helps us understand the scale or reach of something. A local bakery serves one neighborhood. A regional chain might operate in several nearby areas. But a nationwide company does business throughout the whole country. When the weather service issues a nationwide alert, everyone across the nation needs to pay attention.

You'll often see nationwide describing searches, policies, surveys, or movements. A nationwide search for a missing person means police across the country are looking. A nationwide policy applies the same rules whether you're in the north or south, east or west. The word emphasizes unity and completeness: when something is truly nationwide, it reaches across the whole country, leaving no region out.