1. a period when a service (especially electricity, internet, or phone service) is not available or not working

Examples

• The power outage lasted for three hours during the storm.
• Many businesses were affected by the internet outage.
• The hospital has backup generators in case of an electrical outage.
• Cell phone service experienced a brief outage this morning.
• The water treatment plant outage left thousands without clean water.
• We lost all our work when the computer system had an outage.