Definition of Alka-Seltzer™ noun from the Oxford Advanced Learner's Dictionary

 

Alka-Seltzer™

 noun
noun
BrE BrE//ˌælkə ˈseltsə(r)//
 
; NAmE NAmE//ˌælkə ˈseltsər//
 
[countable, uncountable]
 
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a medicine that you mix with water to make a drink that helps with indigestion
See the Oxford Advanced American Dictionary entry: Alka-Seltzer™