View source for injection

{{also|înjection}}
==English==
[[Image:Injection.svg|thumb|An injection (relation on sets in mathematics)]]

===Etymology===
Borrowed from {{bor|en|frm|injection}}, from {{der|en|la|iniectio}}. The mathematical sense is from {{der|en|fr|injection}}, introduced by {{w|Nicolas Bourbaki}} in their treatise ''{{w|Éléments de mathématique}}''.

===Pronunciation===
* {{IPA|en|/ɪnˈd͡ʒɛk.ʃən/}}
* {{audio|en|LL-Q1860 (eng)-Vealhurl-injection.wav|a=Southern England}}
* {{hyphenation|en|in|jec|tion}}
* {{rhymes|en|ɛkʃən|s=3}}

===Noun===
{{en-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.
#: {{ux|en|The troubled business received a much-needed cash '''injection'''.}}
# {{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}}
#: {{syn|en|injective function}}
# {{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.
#: {{ux|en|a SQL '''injection''' exploit allowing a malicious user to modify a database query}}
# {{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]].
#* {{quote-text|en|year=2015|author=Henry L. Richter|title=America's Leap Into Space
|passage=It had been determined that one of the whip turnstile antennas had broken off from Explorer 1 shortly after '''injection''' into orbit, so these were eliminated.}}
# {{lb|en|set theory}} A [[function]] that maps distinct x in the [[domain]] to distinct y in the [[codomain]]; formally, a ''f'':&nbsp;''X''&nbsp;&rarr;&nbsp;''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]].
#: {{ux|en|conjunctival '''injection'''}}
# {{lb|en|internal combustion engines}} [[fuel injection|Fuel injection]]: the pressurized introduction of fuel into a cylinder.
#: {{ux|en|direct '''injection'''}}
#: {{ux|en|tuned port '''injection'''}}
# {{lb|en|steam engines}} The act of throwing [[cold]] [[water]] into a [[condenser]] to produce a [[vacuum]].
# {{lb|en|steam engines}} The cold water thrown into a condenser to produce a vacuum.

====Hyponyms====
{{col4
|en|direct injection
|picoinjection
|sperm injection
|water injection
}}
{{col4|en|title=(computer security) Insertion of program code into an application, URL, etc.
|broker injection
|code injection
|constructor injection
|dependency injection
|email injection
|fault injection
|network injection
|packet injection
|prompt injection
|SQL injection
}}
{{col2|en|title=(construction)
|gravel injection
|grout injection
}}

====Derived terms====
{{der4
|en|injection lipolysis|agroinjection|autoinjection|coinjection|crossinjection|electroinjection|femtoinjection|injectional|interinjection|lipoinjection|microinjection|nanoinjection|postinjection|preinjection|reinjection|superinjection|transjection
|injection moulding
|injective
|injectively|meat injection
|beef injection|booster injection|Heathrow injection|hot beef injection|hot-beef injection|injection molding|lethal injection|supervised injection site|trans-Earth injection|trans-lunar injection|trans-Mars injection|water for injection}}
{{der3|en|title=(construction) Terms derived from ''injection''
|injection cock
|injection condenser
|injection pipe
}}

====Related terms====
* {{l|en|inject}}

====Translations====
{{trans-top|act of injecting, or something injected}}
* Albanian: {{t+|sq|injeksion|m}}, {{t+|sq|injektim|m}}
* Arabic: {{t|ar|حُقْنَة|f}}, {{t|ar|حَقْن|m}}
* Armenian: {{t+|hy|ներարկում}}, {{t+|hy|սրսկում}}
* Asturian: {{t|ast|inyeición|f}}
* Azerbaijani: {{t|az|inyeksiya}}
* Belarusian: {{t|be|ін'е́кцыя|f}}, {{t|be|уко́л|m}}, {{t|be|упы́рскванне|n}}
* Bengali: {{t|bn|ইনজেকশন}}
* Bulgarian: {{t+|bg|инже́кция|f}}, {{t+|bg|впръ́скване|n}}
* Catalan: {{t+|ca|injecció|f}}
* Chinese:
*: Cantonese: {{t|yue|注射}}
*: Mandarin: {{t+|cmn|注射}}
* Czech: {{t+|cs|injekce|f}}, {{t|cs|vstříknutí|n}}
* Danish: {{t|da|indsprøjtning|c}}, {{t|da|injektion|c}}
* Dutch: {{t+|nl|inspuiting|f}}
* Esperanto: {{t|eo|injekto}}
* Estonian: {{t|et|süst}}, {{t|et|süstimine}}, {{t|et|injektsioon}}
* Finnish: {{t+|fi|ruiskutus}}, {{t+|fi|pistos}} {{qualifier|act}}, {{t|fi|ruiske}} {{qualifier|thing injected}}
* French: {{t+|fr|injection|f}}
* Galician: {{t+|gl|inxección|f}}
* Georgian: {{t|ka|ინექცია}}
* German: {{t+|de|Injektion|f}}, {{t+|de|Spritze|f}}
* Greek: {{t+|el|ένεση|f}}
* Hebrew: {{t+|he|זְרִיקָה|f|tr=z'riká}}
* Hindi: {{t+|hi|इंजेक्शन|m}}
* Hungarian: {{t+|hu|befecskendezés}}, {{t+|hu|injekció}}
* Icelandic: {{t+|is|innspýting|f}}
* Ido: {{t+|io|injekto}}, {{t+|io|injektado}}
* Indonesian: {{t+|id|injeksi}}, {{t+|id|suntikan}}
* Italian: {{t+|it|iniezione|f}}
* Japanese: {{t+|ja|注射|tr=ちゅうしゃ, chūsha}}
* Kazakh: {{t|kk|инъекция}}
* Khmer: {{t|km|ការចាក់ថ្នាំ}}
* Korean: {{t+|ko|주사(注射)}}
* Kurdish:
*: Northern Kurdish: {{t+|kmr|enjeksiyon}}
* Kyrgyz: {{t|ky|инъекция}}, {{t+|ky|укол}}
* Lao: {{t|lo|ການສັກຢາ}}, {{t|lo|ສັກຢາ}}
* Latin: {{t|la|iniectiō|f}}
* Latvian: {{t|lv|injekcija|f}}, {{t|lv|šprice|f}}
* Lithuanian: {{t|lt|injekcija|f}}
* Macedonian: {{t|mk|инјекција|f}}
* Malay: {{t|ms|penyuntikan}}, {{t+|ms|suntikan}}
* Mongolian:
*: Cyrillic: {{t+|mn|тарилга}}
* Norwegian:
*: Bokmål: {{t|nb|injeksjon|m}}
* Occitan: {{t+|oc|injeccion|f}}
* Pashto: {{t+|ps|تزريق|m|tr=tazriq}}, {{t|ps|انجکشن|m|tr=enjekšan}}
* Persian: {{t+|fa|تَزریق|tr=tazriq}}, {{t+|fa|اَنژِکسیون|tr=anžeksyon}}
* Polish: {{t+|pl|zastrzyk|m}}, {{t|pl|wstrzyknięcie|n}}, {{t+|pl|iniekcja|f}}
* Portuguese: {{t+|pt|injeção|f}}
* Romanian: {{t+|ro|injecție|f}}
* Russian: {{t+|ru|инъе́кция|f}}, {{t+|ru|уко́л|m}}, {{t+|ru|влива́ние|n}}, {{t+|ru|впры́скивание|n}}
* Serbo-Croatian:
*: Cyrillic: {{t|sh|инјѐкција|f}}, {{t|sh|инјектирање|n}}, {{t|sh|убризгавање|n}}
*: Roman: {{t+|sh|injèkcija|f}}, {{t|sh|injektiranje|n}}, {{t|sh|ubrizgavanje|n}}
* Slovak: {{t|sk|injekcia|f}}, {{t|sk|vstreknutie|n}}, {{t|sk|vstrekovanie|n}}
* Slovene: {{t+|sl|injekcija|f}}
* Spanish: {{t+|es|inyección|f}}
* Swahili: {{t+|sw|sindano}}
* Swedish: {{t+|sv|injektion|c}}, {{t+|sv|insprutning|c}}
* Tajik: {{t|tg|тазриқ}}
* Thai: {{t+|th|การฉีดยา}}, {{t+|th|ฉีดยา}}
* Turkish: {{t+|tr|enjeksiyon}}
* Turkmen: {{t|tk|ukol}}
* Ukrainian: {{t|uk|ін'є́кція|f}}, {{t|uk|уко́л|m}}, {{t|uk|за́штрик|m}}, {{t|uk|за́стрик|m}}, {{t|uk|упо́рскування|n}}, {{t|uk|упри́скування|n}}
* Urdu: {{t|ur|اِنْجِکْشَن|m|tr=injekśan}}
* Uyghur: {{t|ug|ئوكۇل}}
* Uzbek: {{t|uz|inyeksiya}}, {{t+|uz|ukol}}
* Vietnamese: {{t+|vi|tiêm|alt=sự tiêm}}
* Walloon: {{t+|wa|pikeure|f}}
{{trans-bottom}}

{{trans-top|medicine: something injected}}
* Armenian: {{t+|hy|ներարկում}}, {{t+|hy|սրսկում}}
* Asturian: {{t|ast|inyeición|f}}
* Catalan: {{t+|ca|injecció|f}}
* Dutch: {{t+|nl|injectie}}, {{t+|nl|spuitje}}
* Finnish: {{t|fi|ruiske}}, {{t+|fi|injektio}}
* French: {{t+|fr|injection|f}}
* Galician: {{t+|gl|inxección|f}}
* Georgian: {{t|ka|ინექცია}}
* Greek:
*: Ancient: {{t|grc|ἔνεμα|n}}
* Hebrew: {{t+|he|זְרִיקָה|f|tr=z'riká}}
* Hungarian: {{t+|hu|injekció}}
* Indonesian: {{t+|id|suntikan}}
* Italian: {{t+|it|iniezione|f}}
* Malay: {{t+|ms|suntikan}}
* Malayalam: {{t|ml|കുത്തിവെയ്പു്}} {{t|ml|ഇൻഞ്ചക്ഷൻ}}
* Occitan: {{t+|oc|injeccion|f}}
* Persian: {{t+|fa|تَزریق|tr=tazriq}}, {{t+|fa|اَنژِکسیون|tr=anžeksyon}}
* Polish: {{t+|pl|zastrzyk|m}}
* Portuguese: {{t+|pt|injeção|f}}
* Romanian: {{t+|ro|injecție|f}}
* Russian: {{t+|ru|инъе́кция|f}}
* Samoan: {{t|sm|tui}}
* Serbo-Croatian:
*: Cyrillic: {{t|sh|инјѐкција|f}}
*: Roman: {{t+|sh|injèkcija|f}}
* Slovak: {{t|sk|injekcia|f}}
* Spanish: {{t+|es|inyección|f}}
* Tarifit: {{t|rif|tisiyneft|f}}
* Tongan: {{t|to|huhu}}
* Ukrainian: {{t|uk|ін'є́кція|f}}
* Walloon: {{t+|wa|pikeure|f}}
{{trans-bottom}}

{{trans-top|set theory: one-to-one mapping}}
* Catalan: {{t|ca|funció injectiva|f}}
* Chinese:
*: Mandarin: {{t+|cmn|單射}}
* Czech: {{t+|cs|injekce|f}}
* Finnish: {{t+|fi|injektio}}
* French: {{t+|fr|injection|f}}
* German: {{t+|de|Injektion|f}}, {{t|de|injektive Funktion|f}}
* Greek: {{t+|el|εμφύτευση|f}}
* Japanese: {{t+|ja|単射|tr=たんしゃ, tansha}}
* Korean: {{t+|ko|단사(單射)}}
* Polish: {{t+|pl|iniekcja|f}}
* Portuguese: {{t|pt|[[função]] [[injetiva]]|f}}
* Romanian: {{t+|ro|injecție|f}}, {{t|ro|funcție injectivă|f}}
* Russian: {{t+|ru|инъе́кция|f}}
* Serbo-Croatian:
*: Cyrillic: {{t|sh|инјѐкција|f}}
*: Roman: {{t+|sh|injèkcija|f}}
* Slovak: {{t|sk|injekcia|f}}
* Swedish: {{t+|sv|injektion|c}}
{{trans-bottom}}

{{trans-top|computing: insertion of code}}
* Bulgarian: {{t+|bg|вмъ́кване|n}}
* Finnish: {{t+|fi|injektio}}
* French: {{t+|fr|injection|f}}
* German: {{t|de|Einschleusung|f}}, {{t|de|Code-Einschleusung|f}}
* Greek: {{t-needed|el}}
* Japanese: {{t|ja|インジェクション|tr=injekushon}}
* Korean: {{t|ko|인젝션}}
* Russian: {{t+|ru|внедре́ние|n}}
* Spanish: {{t-needed|es}}
{{trans-bottom}}

===See also===
{{top3|en}}
* {{l|en|bijection}} (2)
* {{l|en|hypodermic}}
* {{l|en|immunization}}
* {{l|en|jab}}
* {{l|en|surjection}} (2)
{{bottom}}

===References===
* {{pedia}}

==French==

===Etymology===
{{bor+|fr|la|iniectiō|iniectiōnem}}.

===Pronunciation===
* {{fr-IPA}}
* {{audio|fr|LL-Q150 (fra)-Lyokoï-injection.wav}}

===Noun===
{{fr-noun|f}}

# {{l|en|injection}}

====Related terms====
* {{l|fr|injecter}}

====Descendants====
* {{desc|ro|injecție|bor=1}}
* {{desc|tr|enjeksiyon|bor=1}}

===Further reading===
* {{R:fr:TLFi}}