Is it der, die oder das Polizei?
The correct article in German of Polizei is die. So it is die Polizei! (nominative case)
The word Polizei is feminine, therefore the correct article is die.
Finding the right gender of a noun
German articles are used similarly to the English articles,a and the. However, they are declined differently (change) according to the number, gender and case of their nouns.
In the German language, the gender and therefore article is fixed for each noun.
The most difficult part of learning the German language is the articles (der, die, das) or rather the gender of each noun. The gender of each noun in German has no simple rule. In fact, it can even seem illogical. For example das Mädchen, a young girl is neutral while der Junge, a young boy is male.
It is a good idea to learn the correct article for each new word together - even if it means a lot of work. For example learning "der Hund" (the dog) rather than just Hund by itself. Fortunately, there are some rules about gender in German that make things a little easier. It might be even nicer if these rules didn't have exceptions - but you can't have everything! The best way to learn them is with the App - Der-Die-Das Train! (available for iOS and Android)
German nouns belong either to the gender masculine (male, standard gender) with the definite article der, to the feminine (feminine) with the definite article die, or to the neuter (neuter) with the definite article das.
for masculine: points of the compass, weather (Osten, Monsun, Sturm; however it is: das Gewitter), liquor/spirits (Wodka, Wein, Kognak), minerals, rocks (Marmor, Quarz, Granit, Diamant);
for feminine: ships and airplanes (die Deutschland, die Boeing; however it is: der Airbus), cigarette brands (Camel, Marlboro), many tree and plant species (Eiche, Pappel, Kiefer; aber: der Flieder), numbers (Eins, Million; however it is: das Dutzend), most inland rivers (Elbe, Oder, Donau; aber: der Rhein);
for neutrals: cafes, hotels, cinemas (das Mariott, das Cinemaxx), chemical elements (Helium, Arsen; however it is: der Schwefel, masculine elements have the suffix -stoff), letters, notes, languages and colors (das Orange, das A, das Englische), certain brand names for detergents and cleaning products (Ariel, Persil), continents, countries (die artikellosen: (das alte) Europa; however exceptions include: der Libanon, die Schweiz …).
German declension of Polizei?
How does the declension of Polizei work in the nominative, accusative, dative and genitive cases? Here you can find all forms in the singular as well as in the plural:
|Nominative||die Polizei||die Polizeien|
|Genitive||der Polizei||der Polizeien|
|Dative||der Polizei||den Polizeien|
|Akkusative||die Polizei||die Polizeien|
What is the meaning of Polizei in German?
Polizei is defined as:
 Authority responsible for public safety and order für die öffentliche Sicherheit und Ordnung zuständige Behörde
How to use Polizei in a sentence?
Example sentences in German using Polizei with translations in English.
 Die Polizei hütet das Gesetz. The police guard the law.
 „Das etwa 1,7 Kilogramm schwere Fluggerät sei nur wenige Meter neben einer Familie mit zwei Kindern am Boden eingeschlagen, berichtete die Polizei am Dienstag.“ "The approximately 1.7 kilogram aircraft hit the ground just a few meters from a family with two children, the police reported on Tuesday." 
 „Urspüngliche Aufgabe der Polizei war der Schutz der Gesellschaft vor Verkehrsunfällen und vor Verbrechen.“ "The original task of the police was to protect society from traffic accidents and crimes." 
 „Die meisten Landesinnenminister haben ihre Polizeien angewiesen, ‚Gewalt im persönlichen Nahbereich‘ auf jeden Fall anzuzeigen.“ "Most of the state interior ministers have instructed their police forces to report 'violence in personal proximity' in any case ." 
 Ich muss morgen zur Polizei. I have to go to the police tomorrow.
 „Ein vermeintlich abgestürzter Gleitschirmflieger hat im Schwarzwald für einen Einsatz von Polizei und Bergwacht gesorgt.“ "A paraglider who allegedly crashed has caused the police and mountain rescue service to be deployed in the Black Forest ." 
How do you pronounce Polizei?
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