Pronunciation: (in-jekt'), [key]
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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.