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Added 9 October 2026

injection

/ɪnˈd͡ʒɛk.ʃən/ noun

In Latin: iniectiō Wiktionary

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about injection at Wordnik → Where our words come from →

The forceful insertion of a substance under pressure.
Any solution that is injected (as into the skin).
The act of putting a liquid into the body by means of a syringe.
the nurse gave him a flu shot

Origin

Borrowed from Middle French injection, from Latin iniectio. The mathematical sense is from French injection, introduced by Nicolas Bourbaki in their treatise Éléments de mathématique. Equivalent to inject + -ion.

From Wiktionary, via Kaikki.org (CC BY-SA)

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