anaphylaxisnoun [ U ]
/ˌæn.ə.fɪlˈæk.sɪs//ˌæn.ə.fɪlˈæk.sɪs/also anaphylactic shock, /æn.ə.fɪlˌæk.tɪk ˈʃɒk//æn.ə.fɪlˌæk.tɪk ˈʃɑːk/specializedan extreme and dangerous allergic reaction to something that a person has eaten or touched:
In severe cases, anaphylaxis - the swelling of the tongue and closing of the throat - can occur and is life-threatening.
Scientists believe a bite from a tick can lead to anaphylactic shock.
anaphylactic
adjective /ˌæn.ə.fɪlˈæk.tɪk//ˌæn.ə.fɪlˈæk.tɪk/
an anaphylactic reaction