Rapid | Mean of rapid in English Dictionary

/ˈræpəd/

• happening in a short amount of time
1. a rapid [=quick] change in temperature
2. There's been rapid growth in the number of new businesses in the town.
3. Scientists are concerned about the rapid disappearance of the island's coral reefs.
• having a fast rate
1. a rapid heartbeat
2. rapid breathing
• moving quickly
1. She carefully guided the boat through the rapid water.