Main Entry:

ana·phy·lax·is

Pronunciation:

\-ˈlak-səs\

Function:

noun

Inflected Form(s):

plural ana·phy·lax·es \-ˌsēz\

Etymology:

New Latin, from ana- + prophylaxis

Date:

1907

1 : hypersensitivity (as to foreign proteins or drugs) resulting from sensitization following prior contact with the causative agent 2 : anaphylactic shock