- Introduction of a medicinal substance or nutrient material into subcutaneous tissue (subcutaneous or hypodermic injection), muscular tissue (intramuscular injection), a vein (intravenous injection), an artery (intraarterial injection), the rectum (rectal injection or enema), the vagina (vaginal injection or douche), the urethra, or other canals or cavities of the body.
- An injectable pharmaceutical preparation.
- Congestion or hyperemia.
[L. injectio, a throwing in, fr. in-jicio, to throw in]
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Examples: glitazone, GI cocktail, etc.