decongestant

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decongestant /ˌdiːkənˈʤɛstənt/ noun
plural decongestants
decongestant
/ˌdiːkənˈʤɛstənt/
noun
plural decongestants
Learner's definition of DECONGESTANT
[count, noncount]
: a medicine that helps stop thick fluid from building up in your nose, throat, or chest when you have a cold or similar illness