This is the 622nd most frequent Danish word.
telefon
"Telefon" in Danish means "telephone" in English.
Here, 'telefon' is used to refer to a person's mobile phone, which is a common colloquial noun usage.
Jeg har glemt min telefon derhjemme.
I forgot my phone at home.
In this example, 'telefonen' refers to a specific phone (indicated by the definite form), likely a ringing phone.
Kan du venligst svare på telefonen?
Can you please answer the phone?
Here, 'telefonen' is in its definite form and refers to the invention or concept of the telephone, used in a general historical context.