An abnormally slow heart rate, also known as bradycardia; a medical condition where the heart beats fewer times than normal per minute.
From Greek brachys (short) + kardia (heart), though medically it's an older variant of bradycardia using Greek roots differently.
Interestingly, this word and 'bradycardia' are actually saying the same thing but arrived through different Greek root interpretations—it's like English couldn't decide on the perfect way to say 'slow heart' so it made two words!
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