A large self-service store stocks food, household cleaners, and personal-care items across wide aisles, with checkout lanes at the front. That store is a supermarket. It became the standard format for grocery shopping in the twentieth century.

Supermarkets emphasize one-stop convenience for routine household needs. Departments typically include produce, meat, dairy, bakery, and grocery, sometimes supplemented by pharmacy or general merchandise. Pricing, private-label development, and fresh-food quality are central competitive variables.

The format faces pressure from discounters, warehouse clubs, specialty food stores, and online grocery. Successful supermarkets continually improve freshness, convenience services, and digital integration. For most households the supermarket remains the primary source of weekly food supplies.

The shopping cart navigating supermarket aisles is still one of the most familiar images of modern retail.