1. forcing a liquid, especially a drug or medicine, into the body using a needle and syringe
Usage: medical
2. forcing a liquid into something under pressure
3. adding something new to improve or change a situation
Usage: figurative

Examples

• The nurse is injecting the vaccine into the patient’s arm.
• The doctor recommended injecting insulin twice daily.
• They are injecting concrete into the foundation cracks.
• The mechanic is injecting oil into the engine.
• The new coach is injecting energy into the team.
• She’s injecting humor into her presentations.
• The company is injecting capital into the project.