Question

allergen
al.ler.gen  AHD[²l“…r-j…n]   DJ[6#l*d9*n]  KK[6#l*d9*n]
n.（名词）
    A substance, such as pollen, that causes an allergy.
    变态反应原，过敏原：一种可引起过敏的物质，如花粉
ORIGIN
1.GermanAllergen
    德语Allergen
2.Allergie [allergy] * see  allergy
    Allergie [过敏] *参见allergy
3.-gen [-gen]
    -gen [后缀，表“发生物，原”]
DERIVATIVES
▪al”lergen“ic  AHD:  [-jµn“¹k] （形容词）