Procedure/prəˈsiːdʒər/ Definition 1 of 4Pro Tip 1/2Sequence Importance Refers to steps in a specific order; missing or changing order may cause problems. There's a set procedure for evacuating the building during a fire. Pro Tip 2/2Not Always Written Procedures can be official rules or just commonly accepted ways to do things. There's an unwritten procedure for who get to use the gym first.