The terms perimelasma and apomelasma (from a Greek root) were used by physicist and science-fiction author Geoffrey A. Landis in a story published in 1998,Perimelasma , by Geoffrey Landis, first published in Asimov's Science Fiction, January 1998, republished at Infinity Plus thus appearing before perinigricon and aponigricon (from Latin) in the scientific literature in 2002.
