1. past tense and past participle of retune; adjusted the tuning of a musical instrument or electronic device again

Examples

• The guitarist retuned his instrument between songs.
• She retuned the piano after it was moved to the new location.
• The radio had to be retuned to pick up the station clearly.
• The mechanic retuned the engine for better performance.
• After the software update, the device needed to be retuned.
• The orchestra members retuned their instruments during intermission.