An instrument that measures the pressure and force of blood flow through the cardiovascular system.
Combination of Greek 'haima' (blood), 'dynamis' (power/force), and '-meter' (measure). Created in the 19th century as physicians needed ways to quantify the mechanical properties of circulation.
This is essentially the ancestor of modern blood pressure cuffs, invented when doctors wanted to understand how hard the heart works to pump blood—the physics of staying alive!
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