Sliming is the process of a character turning into green slime as the result of either the slime's attack, using a biting or engulfing attack against a green slime, or attempting to eat its corpse. The process is fatal for you, but for other monsters they simply turn into a green slime. It is a slow process - you will have nine turns to take action against it if it is induced by the slime's attack or biting attack or consuming the corpse and four turns if by means of engulfing a green slime.