An instrument for directly measuring the speed and rate of blood flow through arteries and veins during circulation.
From Greek haima 'blood,' dromos 'running,' and metron 'measure.' This instrument name combines measurement terminology with the concept of blood movement through vessels.
The hemadromometer was a real device used in research hospitals—it required threading probes into blood vessels, making it dangerous but yielding the first quantitative data on how fast blood actually flows!
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