INJECT'ION, noun [Latin injectio.] The act of throwing in, particularly that of throwing a liquid medicine into the body by a syringe or pipe. 1. A liquid medicine thrown into the body by a syringe or pipe; a clyster. 2. In anatomy, the act of filling the vessels of an animal body with some colored substance, in order to render visible their figures and ramifications.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI