This is the 8166th most frequent Swedish word.
ambulanshelikopter
Air ambulance helicopter.
Here, 'ambulanshelikoptern' is used as a definite noun, indicating a specific ambulance helicopter.
Ambulanshelikoptern landade på sjukhusets tak.
The ambulance helicopter landed on the hospital's roof.
In this sentence, 'ambulanshelikopter' is used as an indefinite noun, referring to an unspecified ambulance helicopter.
Vi såg en ambulanshelikopter flyga över staden.
We saw an ambulance helicopter flying over the city.
Here, 'ambulanshelikoptern' describes a specific entity and is used with a possessive article in a definite form.