injection

The word “injection” means the act of putting a liquid, especially medicine, into the body with a needle, or the dose given that way. In plain terms, a shot of medicine, a sudden boost of funding, or (in tech) malicious code slipped into a system.

“Injection” is pronounced ihn-JEHK-shuhn (/ɪnˈd͡ʒɛk.ʃən/ in IPA).

Here is “injection” used in a sentence: “The doctor gave her a flu injection.”

“Injection” is a noun.

The word “injection” comes from Latin. From Latin iniectio, "a throwing in," from inicere, "to throw into.".

“Injection” is a fairly common word in modern English, usually learned at around the B2 level.

“Injection” has 3 distinct senses listed in this dictionary. The most common is: the act of putting a liquid, especially medicine, into the body with a needle, or the dose given that way.

An injection is the method of delivering a liquid into the body with a needle, while a vaccine is a substance that builds immunity to a disease. A vaccine is often given by injection, but not all injections are vaccines.

An injection delivers a dose of liquid quickly through a needle, while an infusion drips fluid into the body slowly over a longer period, usually through a drip. Injections are brief; infusions are gradual.

In a financial context, an 'injection' is a sudden addition of money or resources into something, as in 'a cash injection'. It suggests a boost intended to stimulate or support an organization or economy.

In computing, 'injection' refers to the malicious insertion of code into a program or system, as in 'SQL injection'. Attackers use it to make software carry out commands its designers never intended.