Quick meaning
A display setting that changes the background of apps and screens from white to dark, reducing eye strain in dim light.
Think of it like this
Like dimming the lights in a room when it gets dark outside.
Where you may see this
You may see this inside app stores, app settings, software updates, and install instructions.
Why it matters
Knowing the term helps you understand what an app is asking you to do before you tap, install, or change anything.
Say it simply
Dark Mode means: A display setting that changes the background of apps and screens from white to dark, reducing eye strain in dim light.