Cthulhu Mythos

shared fictional universe based on the work of H. P. Lovecraft

subgenre of horror

regio on Pluto

1977 grimoire, the best-known real book named after the fictional Necronomicon

cultural references to the work of author H. P. Lovecraft

species of flagellated protist

Aklo is the name of a fictional language that has been used by many authors from its first reference in 1899. In the stories the language features in, it is said to have mystical powers.