"severe allergic reaction," 1905, from Latin anaphylaxis, perhaps based on French anaphylaxie (1902); see anaphylactic.
Entries linking to anaphylaxis
anaphylactic adj.
"of or pertaining to a severe allergic reaction," 1905, with -ic + medical Latin noun anaphylaxis "exaggerated susceptibility," from Greek ana- "up" (see ana-) + phylaxis "protection," from phylax "guardian, watcher, protector," a word of unknown origin. Compare prophylactic. Anaphylactic shock is attested by 1916.