What is an Anime
Anime is a type of Japanese-Style art or cartooning. DB/Z/GT/AF, Gundam, Trigun, etc are all examples of anime. This style of cartooning is much more detailed than many other styles that are used today to make comics and cartoons. One noticeable difference is the detail in a person's features, like the hair, eyes, nose and ears. Another characteristic is the sharp hairs, the extra-large eyes, and the small nose and mouth. Also, the eyebrows look solid.
There are many more differences, and this page only lists a few. You may want to look at the pictures and shows and compare them to the cartoons you frequently see (that are not anime).