English
injection
Injection comes from Latin iniectio, from iniciō ‘to throw, cast, hurl or place in, on, into,…’, and ultimately from Proto-Indo-European *(H)yeh₁-.
- Proto-Indo-Europeanc. 4500–2500 BCE*(H)yeh₁-‘to throw’reconstructed
- Proto-Indo-European, derivedc. 4500–2500 BCE*(H)yéh₁kt ~ *(H)ih₁kéntreconstructed
- Latinc. 75 BCE–200 CEiaciō‘throw, hurl’
- Latin, derivedc. 75 BCE–200 CEiniciō‘to throw, cast, hurl or place in, on, into, upon, over or at’
- Latin, derivedc. 75 BCE–200 CEiniectio
- Middle Frenchc. 1400–1600injection
- Englishearliest quotation 2010same form
attested reconstructed ? uncertain or disputed
Lineage
- Proto-Indo-Europeanc. 4500–2500 BCE*(H)yeh₁-‘to throw’reconstructed
- Proto-Indo-European, derivedc. 4500–2500 BCE*(H)yéh₁kt ~ *(H)ih₁kéntreconstructed
- Latinc. 75 BCE–200 CEiaciō‘throw, hurl’
- Latin, derivedc. 75 BCE–200 CEiniciō‘to throw, cast, hurl or place in, on, into, upon, over or at’
- Latin, derivedc. 75 BCE–200 CEiniectio
- Middle Frenchc. 1400–1600injection
- Englishearliest quotation 2010same form
Earliest quotation: 2010, Paul Shreve, David W. Townsend: “For some indications in PET imaging, it is necessary…”
Formed from inject + -ion
The story
The mathematical sense is from French injection, introduced by Nicolas Bourbaki in their treatise Éléments de mathématique.
Linked words
through Proto-Indo-European *(H)yeh₁- ‘to throw’
year, hour, catheter, trajectory, enema, jut, abject, iambic, jetsam, dejection, 38 more
through Proto-Indo-European *(H)yéh₁kt ~ *(H)ih₁ként
objective, projection, objection, projectile, ejection, objector, 24 more
through Latin iaciō ‘throw, hurl’
disease, project, ease, adjacent, jet, object, jess, gist, jetty, adjective, conjecture, ejaculate, ejaculation, eject, joist, jettison, interject, subjection, 33 more
Today it means
noun The act of injecting, or something that is injected.
Language periods are conventional ranges, not dates for this word.
Etymograph / Proto-Indo-European *(H)yeh₁- / injection