Used to refer to an attack that covers every direction at once in 3 dimensions, hitting anything in a sphere around the attacker. For example, a conventional explosion is an omnidirectional attack, if you consider the explosive to be the "attacker". Omnidirectional attacks can provide something of a defense against speedblitzes, but by themselves they are not all that effective in this regard, and work best when combined with another power such as precognition. A notable disadvantage of omnidirectional attacks is that they are usually not as powerful as more narrowly focused attacks, since they do not concentrate all of their power into a smaller area.
Compare with Area of Effect
- Neji's Kaiten attack (from Naruto)
- Byakuya's Senbonzakura dome (from Bleach)
- Luffy's Gomu Gomu No Hanabi (from One Piece)
- Many ki attacks in Dragon Ball