Hygienic/haɪˈdʒenɪk/ Definition 1 of 3Pro Tip 1/3Health Importance Use 'hygienic' to show the importance of health and preventing illness. Hospitals follow strict hygienic guidelines. Pro Tip 2/3Daily Routine 'Hygienic' often describes everyday actions to stay clean. Brushing your teeth twice a day is considered a hygienic routine. Pro Tip 3/3Social Expectation Being 'hygienic' is seen as socially responsible behavior. It's important to be hygienic when cooking for others.