anaphylactic shockWiktionary 原文英/ˌænəfɪˈlæktɪk ˈʃɒk/美/ˌænəfəˈlæktɪk ˈʃɑːk/释义名词noun1A severe and rapid systemic allergic reaction to an allergen, constricting the trachea and causing generalized vasodilation.