1. a temporary loss of vision or consciousness caused by a sudden drop in blood pressure or blood flow to the brain, often experienced by pilots or astronauts during rapid acceleration
Usage: aviation; medical

1. to cause (a user interface element) to become inactive or disabled by displaying it in a faded or grayed-out appearance
Usage: computing; informal
2. to experience a temporary loss of vision or consciousness due to reduced blood flow to the brain
Usage: aviation; medical

Examples

• The pilot experienced a greyout during the high-G maneuver.
• The submit button will greyout if you don't fill in all required fields.
• Astronauts train to handle greyouts that may occur during launch.
• The application will greyout unavailable menu options.
• Fighter pilots must learn to recognize the early signs of a greyout.
• When the checkbox is unchecked, the related settings greyout automatically.