injection

Fetched 2026-10-26 (cache).

Synonyms: infection, invection, insection, dejection, induction, inflection, inception, intention, abjection, rejection, inertion

Antonyms: infection, invection, insection, dejection, induction, inflection, inception, intention, abjection, rejection, inertion

Related words from Datamuse; suggestions, not definitions.

Noun

The act of [[injecting]], or something that is [[injected]].
A [[specimen]] prepared by injection.
{{lb|en|category theory}} A [[morphism]] from either one of the two components of a [[coproduct]] to that coproduct.
{{lb|en|construction}} The act of inserting materials like concrete grout or gravel by using high pressure pumps.
{{lb|en|figuratively}} The supply of [[additional]] [[funding]] to a person or a business.
{{lb|en|mathematics}} A [[relation]] on sets ''(X,Y)'' that associates each element of ''Y'' with at most one element of ''X''. {{C|en|Functions}}
{{lb|en|computer security}} The [[insertion]] of program [[code]] into an [[application]], [[URL]], [[hardware]], etc.; especially when [[malicious]] or when the [[target]] is not [[design]]ed for such insertion.
{{lb|en|space}} The act of putting a spacecraft into a particular orbit, especially for changing a stable orbit into a [[w:transfer orbit|transfer orbit]], e.g. [[w:trans-lunar injection|trans-lunar injection]].
{{lb|en|set theory}} A [[function]] that maps distinct x in the [[domain]] to distinct y in the [[codomain]]; formally, a ''f'': ''X'' → ''Y'' such that f(a) = f(b) implies a = b for any a, b in the [[domain]].
{{lb|en|medicine}} Something injected [[subcutaneous]]ly, [[intravenous]]ly, or [[intramuscular]]ly by use of a [[syringe]] and a [[needle]].
{{lb|en|medicine}} [[congestion|Congestion]] (of a body part, with blood or other fluid), such as [[hyperemia]].
{{lb|en|internal combustion engines}} [[fuel injection|Fuel injection]]: the pressurized introduction of fuel into a cylinder.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.