noun
radio
A2
Radio (n., das) means 'radio' (device or broadcast). Plural: Radios. Genitive singular: des Radios. Regular neuter noun with -s plural; often used without article for medium ('im Radio laufen'). No special preposition; context determines prepositions like 'im' or 'auf' for broadcasts.
Examples
Ich höre Radio.
I listen to the radio.
Die Firma lieferte das Radio per Kurier, nachdem die Zahlung eingegangen war, weil der Kunde es dringend brauchte.
The company delivered the radio by courier after the payment had been received because the customer urgently needed it.
Ich höre morgens das Radio.
I listen to the radio in the morning.
Details
Mnemonics
an old-fashioned tabletop radio with a dial
radio (same as English)
das = neuter (or sometimes der) — think of a neutral device
Notes
Can be used with both genders in some regions (das Radio / der Radio). Plural: Radios.