I'm interested in working as an artist in the game industry. Many job postings contain the phrase "pixel art". What exactly is pixel art?
This is the kind of question that's better answered with google. Pixel art is game art that is very restricted - you are literally using pixels to draw something, so they end up having a very boxy look. (Though a lot of pixel art now is done on a much larger scale and then made to look like it's been edited pixel by pixel.)
You can see in the bottom right of this image the actual size of the art, and then the larger left portion what it looks like zoomed in. Lines and shading are implied by individual pixels put in a particular colour. (An outline, for example, is achieved by making all the pixels along the outside edge black.)
As a quick search will tell you, pixel art is digital artwork that is created by drawing individual pixels in an image rather than say, rendering a 3D model. It commonly refers to clean, cartoonish graphics reminiscent of old 2D video games.
This forum is a pretty good place to get a good idea, because they also have a forum for "low spec art", which you can compare to their "pixel art" forum and see the difference.
For loads of examples, links to resources and tutorials, a thriving, friendly, no-nonsense community, pixel-art-related news, and weekly challenges, check out PixelJoint and your perspective will be forever changed.