Annihilationist

• (n.) One who believes that eternal punishment consists in annihilation or extinction of being; a destructionist.
Found on http://thinkexist.com/dictionary/meaning/annihilationist/

Annihilationist

An·ni`hi·la'tion·ist noun (Theol.) One who believes that eternal punishment consists in annihilation or extinction of being; a destructionist.
Found on http://www.encyclo.co.uk/webster/A/87
No exact match found