chimerical

adjective

1. Of or pertaining to a chimera.

2. Being a figment of the imagination; fantastic (in the archaic sense).

   “a chimerical goal”

3. Inherently fantastic; wildly fanciful.

4. geneticsResulting from the expression of two or more genes that originally coded for separate proteins.

5. visionof a perceived colorImpossible to physically produce due to having an impossibly-high saturation or luminosity, but viewable by overlaying an afterimage and a suitably-colored physical image.

6. Being or relating to or like a chimera

   “his Utopia is not as chimeric commonwealth but a practical improvement on what already exists”

   Similar: chimeric, chimeral