allergy AE seasonal allergy AE 10048908 JX, LW, YH WEB: http://kidshealth.org/parent/medical/allergies/seasonal_allergies.html 季节性变态反应 an allergy AE which occur during certain times of the year, usually when outdoor molds release their spores, and trees, grasses, and weeds release tiny pollen particles into the air to fertilize other plants.