The term 24/7/365 is a shorthand way of saying that something is available NONSTOP, or without interruption, for 24 hours a day, 7 days a week, and 365 days a year. This phrase is often used to describe services that are available around the clock, such as customer service hotlines or emergency medical services. It can also be used to describe businesses that are open all the time, such as convenience stores or gas stations.