Frames

In SSBM, like in most games, the length of a frame depends on the hZ it is set to. SSBM is usually set to 50/60hZ, meaning a frame is one fiftieth of one sixtieth of a second.

This is how quickly the game moves, in one frame intervals. Each move and event takes a certain amount of frames, and people will often refer to frames to describe how long something takes.