Pain in the heart or cardiac region; a medical term for heart pain or chest discomfort related to cardiac issues.
From cardio- (Greek kardia, 'heart') + -dynia (from Greek dyne, 'pain'). Medical term from late 19th-century clinical terminology for cardiac pain conditions.
The -dynia suffix is medical Latin gold—arthralgia (joint pain), myalgia (muscle pain), neuralgia (nerve pain)—once you know it means pain, you can interpret dozens of medical conditions you've never heard before!
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