1. the act of forcing a liquid, especially a drug or vaccine, into the body using a needle and syringe
2. the act of introducing something forcefully into a situation or process
3. the forcing of fuel or other liquid into an engine or machine under pressure
Usage: automotive; mechanical

Examples

• The nurse prepared several injections for the vaccination clinic.
• Children often fear getting injections at the doctor’s office.
• The patient received daily insulin injections to manage diabetes.
• The company needed an injection of new capital to survive.
• His speech provided a much-needed injection of humor into the serious meeting.
• The car’s fuel injection system improved its performance significantly.
• Modern engines use electronic fuel injections for better efficiency.