[chii]

> The correct way to interpret "1920 pixels wide" is "the same width as 1920 pixels arranged in a 1920 by 1 row".

But to be contrarian, the digital camera world always markets how many megapixels a camera has. So in essense, there are situations where pixels are assumed to be an area, rather than a single row of X pixels wide.

[SAI_Peregrinus]

The digital camera world also advertises the sensor size. So a 24MP APS-C camera has smaller pixels than a 24MP Full-frame camera, for example.