eobiont

noun2

1. •
   A hypothetical primordial life-form or chemical precursor to a living organism.

   • Only when “eobionts”—primordial organisms equipped with a primitive metabolism—began to multiply efficiently was this material used up. — 1993
2. •
   An artificially created creature; a Frankenstein's monster.

   • In the Dutch novelist Harry Mulisch’s The Procedure, the protagonist Victor Werker is the creator of artificial life in the form of the Eobiont (Mulisch 2001). — 2003