0 a type of display (= a way of showing text and images) on a phone, computer screen, etc. that uses a black or dark background with lighter text:
Switching on dark mode can help you avoid some of the eye strain caused by bright screens.
Dark mode is increasingly popular, but some argue it is actually harder to read.
Dark mode can be useful for people who have “photophobia,” a condition in which bright light can trigger migraines.