calcium-channel blocker
cal·ciumc·han·nelblocker
noun
1.
any of a class of drugs that block the flow of the electrolyte calcium (either in nerve cell conduction or smooth muscle contraction of the heart); has been used in the treatment of angina or arrhythmia or hypertension or migraine
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WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.