pernicieux

== French == === Etymology === Borrowed from Latin perniciōsus. === Pronunciation === IPA(key): /pɛʁ.ni.sjø/ === Adjective === pernicieux (feminine pernicieuse, masculine plural pernicieux, feminine plural pernicieuses) (medicine, rare) insidious (having a slow and discreet, but dangerous evolution) anémie pernicieuse ― pernicious anemia, or Biermer's anemia, a form of megaloblastic anemia due to vitamin B12 deficiency fièvre pernicieuse ― pernicious fever (old term for neuro-malaria, the most serious form of malaria fever) 1879, Jules Verne, L'Île mystérieuse, Part 3, Chapter 10, translated by Stephen William White: (literary) morally harmful; pernicious (dated) literally harmful or dangerous, usually of animals or persons 1699, François Fénelon, Les Aventures de Télémaque, Book 6, translated 1768 by John Hawkesworth: === Further reading === “pernicieux”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012