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allergen

noun

ˈælərdʒən

Meaning

A substance that causes an allergic reaction.

Pollen is a common allergen that affects many people.

irritant, trigger

non-reactive, hypoallergenic

a short opera with light and humorous themes

the process of saving money or resources for future use

The quality of behaving or speaking in such a way as to avoid causing offense or revealing private i...

a rule or directive made and maintained by an authority

a prolonged period of abnormally low rainfall, leading to a shortage of water

An established or official way of doing something; a series of actions conducted in a certain order.