This is the 4130th most frequent Swedish word.
radarn
"Radarn" is the definite form of "radar" in Swedish, meaning "the radar."
Here, 'radarn' metaphorically refers to attention or focus.
Han försvann från radarn efter mötet.
He disappeared from the radar after the meeting.
In this sentence, 'radarn' is mentioned literally, referring to a physical radar device.
Radarn behöver kalibreras för att vara effektiv.
The radar needs calibration to be effective.
'Radarn' is used metaphorically here, indicating that the action is not widely noticed or recognized.