Mathesonian UK /ˌmæθəˈsəʊ.ni.ən/US /ˌmæθəˈsoʊ.ni.ən/ adjective1 •Of or relating to Richard Matheson (1926–2013), American author and screenwriter, primarily in the genres of fantasy, horror, and science fiction. formsmore Mathesonian · most Mathesonian
