- to force (a fluid) into a passage, cavity, or tissue: to inject a medicine into the veins.
- to introduce (something new or different): to inject humor into a situation.
- to introduce arbitrarily or inappropriately; intrude.
- to interject (a remark, suggestion, etc.), as into conversation.
- (in prescriptions) an injection.
- to introduce (a fluid) into (the body of a person or animal) by means of a syringe or similar instrument
- to introduce (a new aspect or element)
- to interject (a comment, idea, etc)
- to place (a rocket, satellite, etc) in orbit
