Is it der, die oder das Gedächtnis?
The correct article in German of Gedächtnis is das. So it is das Gedächtnis! (nominative case)
The word Gedächtnis is neuter, therefore the correct article is das.
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 Gedächtnis?
How does the declension of Gedächtnis 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||das Gedächtnis||die Gedächtnisse|
|Genitive||des Gedächtnisses||der Gedächtnisse|
|Dative||dem Gedächtnis||den Gedächtnissen|
|Akkusative||das Gedächtnis||die Gedächtnisse|
What is the meaning of Gedächtnis in German?
Gedächtnis has various definitions in German:
 Ability to save experiences and sensory impressions in order to be able to recall them later Fähigkeit, Erlebnisse und Sinneseindrücke zu speichern, um sich später wieder daran erinnern zu können
 Memory of a person or an event Erinnerung an eine Person oder ein Ereignis
 Swiss: church event to commemorate a person schweizerisch: kirchliche Veranstaltung, um einer Person zu gedenken
How to use Gedächtnis in a sentence?
Example sentences in German using Gedächtnis with translations in English.
 Leider lässt die Gedächtnisleistung mit dem Alter nach. Unfortunately, memory performance decreases with age.
 „Er begann sein Gedächtnis zu durchforschen, ob er nicht noch irgend etwas Dummes gesagt oder getan habe.“ "He began to search his memory, whether he had not said or done anything else stupid?" 
 Dieses Monument wurde zum Gedächtnis an Kaiser Friedrich errichtet. This monument was erected in memory of Emperor Friedrich.
 „Und oft gerät das Gedächtnis in den handfesten Irrtum, oft ergreift es Partei.“ "And memory often falls into a tangible error, often it takes sides" 
 Am kommenden Sonntag feiern wir ein Gedächtnis. Next Sunday we will celebrate a memory.
How do you pronounce Gedächtnis?
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