| 1. | to force (a fluid) into a passage, cavity, or tissue: to inject a medicine into the veins. |
| 2. | to introduce (something new or different): to inject humor into a situation. |
| 3. | to introduce arbitrarily or inappropriately; intrude. |
| 4. | to interject (a remark, suggestion, etc.), as into conversation. |

| (in prescriptions) an injection. |

inject in·ject (ĭn-jěkt')
v. in·ject·ed, in·ject·ing, in·jects
To introduce a substance, such as a drug or vaccine, into a body part.
To treat by means of injection.