rhizoverbBeta
DictionaryrateMeasured proportion
noun

rate

RAYT/reɪt/

An amount measured or charged per specified unit.

The bicycle travels at a rate of 15 miles per hour.

A bicycle handlebar-mounted speed computer prominently displays only '15 mph' on its small screen.
Etymology
rateLatinto reckon, think

Latin reri, “to reckon,” produced a form meaning “fixed, settled,” used for a fixed amount. Rate developed from proportional valuation into a measure relating quantities, such as distance to time.

In context

This Week in Science (TWIS)27:15
breathing directly relates to heartbeat if you are manipulating only breathing you'll see a change in heart rate
Science For Inspiration - This Week in Science Podcast (TWIS)

More examples

  • Her heart beats at a rate of 70 beats per minute.
  • The garage charges an hourly rate of twelve dollars.
  • These savings accounts offer different interest rates.

Forms

rate · rates

Similar words

speed
Specifically measures distance traveled per unit of time.
frequency
Specifically measures how often something happens within a given period.
price
An amount charged, not necessarily calculated per specified unit.