allergen
noun [ C ] medical specialized uk/ˈæl.ə.dʒən/ us/ˈæl.ɚ.dʒən/
（引起过敏反应的）变应原;过敏原
a substance that can cause an allergy (= condition of the body reacting badly to something) but is not harmful to most people
英汉双解词典收录81607条英汉双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。