What does 'resolution' refer to when discussing monitors?

Resolution is an important concept in the context of monitors, and it specifically refers to the number of pixels displayed on the screen. This is typically expressed as two numbers, indicating the number of pixels in the horizontal and vertical dimensions, such as 1920x1080, which means the display has 1920 pixels horizontally and 1080 pixels vertically. A higher resolution means more pixels, which generally results in a sharper and clearer image, as more detail can be represented.

The other terms related to monitors provide different aspects of display quality and performance but do not define resolution. For example, the size of the monitor relates to the diagonal measurement of the screen, while color depth indicates the number of colors that can be displayed and the refresh rate refers to how often the image on the screen is refreshed each second. Therefore, those aspects do not capture the concept of resolution, which is specifically tied to the pixel count on the screen.