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

 

anaphylaxis

 noun
noun
BrE BrE//ˌænəfɪˈlæksɪs//
 
; NAmE NAmE//ˌænəfɪˈlæksɪs//
 
[uncountable, countable](pl. anaphylaxes
BrE BrE//ˌænəfɪˈlæksiːz//
 
; NAmE NAmE//ˌænəfɪˈlæksiːz//
 
)
(medical)
 
jump to other results
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