Deterium

Deterium (de - teer - um), is a word which means to fall into death. It can be used literally but is often used in a more abstract sense. You may fall into deterium after a large amount of contemplation, especially the existential kind. Anything that causes your brain to search for the gray spots of the universe, that leads to utter confusion and mental discomfort, can be abstractly described by deterium. However, if someone actually dies, you could use it aswell. (Somewhat interchangeable with the word death).