injection

[ in-jek-shuh n ]

/ ɪnˈdʒɛk ʃən /

SEE MORE SYNONYMS FOR injection ON THESAURUS.COM

noun

the act of injecting.

something that is injected.

a liquid injected into the body, especially for medicinal purposes, as a hypodermic or an enema.

state of being hyperemic or bloodshot.

Mathematics. a one-to-one function.

Also called insertion. Aerospace. the process of putting a spacecraft into orbit or some other desired trajectory.

Nearby words

inject, inject., injectable, injectant, injected, injection, injection molding, injection well, injector, injera, injudicious

Origin of injection

First recorded in 1535–45, injection is from the Latin word injectiōn- (stem of injectiō). See inject, -ion

Related forms

post·in·jec·tion, adjectivere·in·jec·tion, nounsu·per·in·jec·tion, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for injection

At least 15 children, and perhaps many more, have died after receiving an injection thought to be the measles vaccine.
Measles Vaccine Mix-Up Kills Dozens of Syrian Children|Kent Sepkowitz|September 18, 2014|DAILY BEAST
Within 24 hours after injection, a typical horse loses 35 to 100 pounds, mostly water weight.
How Kentucky Will Save Horse Racing From Itself|Jonathan Miller|September 4, 2014|DAILY BEAST
According to reports, the death took 26 minutes from injection.
The Death Penalty’s Gruesome Truth|Kent Sepkowitz|February 6, 2014|DAILY BEAST
With a record number of women—184—running for House and Senate seats this year, Capitol Hill got an injection of estrogen.
Estrogen Fest: Key Women in the Race for Congress|Abigail Pesta|November 7, 2012|DAILY BEAST

But if systemic collapse was indeed imminent, then the injection of funds was good policy.
Wall Street's Not the Problem!|Stephen L. Carter|October 3, 2011|DAILY BEAST
It has been employed by M. Gannal as an injection to preserve animal bodies, which it will do for years.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I|Arnold Cooley
After the injection there was restlessness, and, ultimately, general paralysis of the central nervous system.
Poisons: Their Effects and Detection|Alexander Wynter Blyth
As was stated, improvement was noted 16 hours after the first injection.
Scurvy Past and Present|Alfred Fabian Hess
Symptoms appeared in from 10 to 15 minutes after the injection of caffein.
The Toxicity of Caffein|William Salant
This injection should be used twice a day, morning and night.
Woman|William J. Robinson

British Dictionary definitions for injection

injection

/ (ɪnˈdʒɛkʃən) /

noun

fluid injected into the body, esp for medicinal purposes

something injected

the act of injecting

the act or process of introducing fluid under pressure, such as fuel into the combustion chamber of an engine
(as modifier)injection moulding

maths a function or mapping for which f(x) = f(y) only if x = ySee also surjection, bijection

Derived Forms

injective, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012