Merriam-Webster Collegiate Dictionary - inject

 transitive verb  Etymology: Latin ~us, past participle of inicere, from in- + jacere to throw — more at jet  Date: 1601  1.  a. to introduce into something forcefully ~ fuel into an engine  b. to force a fluid into (as for medical purposes) ~ a drug into the bloodstream  2. to introduce as an element or factor in or into some situation or subject condemning any attempt to ~ religious bigotry into the campaign — Current Biography  • ~able adjective or noun  • ~or noun