orthorexiaPronunciation: /ˌɔːθəˈrɛksɪə/Definition of orthorexia noun [mass noun] an obsession with eating foods that one considers healthy. (also orthorexia nervosa) a medical condition in which the sufferer systematically avoids specific foods that they believe to be harmful. Derivatives orthorexic adjective & noun Origin: 1990s: from ortho- + Greek orexia 'appetite', after anorexiaorthorexia in other Oxford dictionaries Definition of orthorexia in the US English dictionary
