Definition of anaphylaxis noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˌænəfɪˈlæksɪs//
; NAmE NAmE//ˌænəfɪˈlæksɪs//
[uncountable, countable](pl. anaphylaxes
BrE BrE//ˌænəfɪˈlæksiːz//
; NAmE NAmE//ˌænəfɪˈlæksiːz//
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an extreme allergic reaction to something that you eat or touch Word Origin early 20th cent.: modern Latin, from Greek ana- ‘again’ + phulaxis ‘guarding’.
See the Oxford Advanced American Dictionary entry: anaphylaxis