What does the root word tachy mean?

The root word "tachy" comes from the Greek word "tachys" and means "fast" or "rapid".

Here are some examples of words using the root "tachy":

* Tachycardia: A rapid heartbeat

* Tachymeter: A device used to measure speed

* Tachypnea: Rapid breathing

* Tachyphylaxis: A rapidly diminishing response to a drug

* Tachygraphy: Rapid writing, like shorthand