: to force a fluid (as a medicine) into by using a special needle
: to introduce as something needed or additional <He tried to inject confidence into his brother.>
Word Root of INJECT
The Latin word jacere, meaning “to throw,” and its form jactus give us the root ject. Words from the Latin jacere have something to do with throwing. To reject is to throw back or away. To eject is to throw out. To inject is to throw one thing into another. To project is to throw forward onto a surface.
transitive verbin·ject \in-ˈjekt\
Medical Definition of INJECT
: to force a fluid into (a vessel, cavity, or tissue) for preserving, hardening, or coloring structures
: to introduce (as by injection or gravity flow) a fluid into (a living body) especially for the purpose of restoring fluid balance, treating nutritional deficiencies or disease, or relieving pain; also: to treat (an individual) with injections