injection

[ in-jek-shuhn ]

noun

1. the act of injecting.
2. something that is injected.
3. a liquid injected into the body, especially for medicinal purposes, as a hypodermic or an enema.
4. state of being hyperemic or bloodshot.
5. Mathematics. a one-to-one function.
6. Also called insertion. Aerospace. the process of putting a spacecraft into orbit or some other desired trajectory.

injection

/ ɪnˈdʒɛkʃən /

noun

1. fluid injected into the body, esp for medicinal purposes
2. something injected
3. the act of injecting
4. 1. the act or process of introducing fluid under pressure, such as fuel into the combustion chamber of an engine
   2. ( as modifier )

      injection moulding

5. maths a function or mapping for which f( x ) = f( y ) only if x = y See also surjection bijection

injection

/ ĭn-jĕk′shən /

1. A substance that is introduced into a organism, especially by means of a hypodermic syringe, as a liquid into the veins or muscles of the body.
2. A function that maps each member of one set (the domain) to exactly one member of another set (the range).
3. Compare bijection

Derived Forms

• inˈjective, adjective

Other Words From

• postin·jection adjective
• rein·jection noun
• super·in·jection noun

Word History and Origins

Origin of injection¹

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

Example Sentences

Steve Borthwick's side, meanwhile, need their own injection of belief.

From BBC

Greater Manchester's councils will still receive a "desperately needed" £100m cash injection pledged by the previous government, it has been confirmed.

From BBC

Days after her second injection she began experiencing severe stomach pains and sickness, so she went to A&E at Monklands - where her colleagues battled to save her life.

From BBC

Some researchers worry this injection of metals in the upper atmosphere could be damaging.

From Los Angeles Times

However, shareholders including the Beckhams had to provide a £6.9m cash injection in 2023, when operating losses stood at £200,000.

From BBC

Related Words

• dose
• needle