A highly concentrated acidic paste is suddenly released from the mouth. The acid boasts such high density and concentration that it is even capable of diluting stone, vaporising it. There are no prerequisite moves to do before this techniques' activation. Because of this, Katsuyu can easily strike quickly and catch an enemy off-guard with this attack.
The inverse order of the kanji 舌歯, 歯舌, means radula, an anatomical structure used by molluscs for feeding.