The process of adjusting something to the correct pitch, frequency, or optimal condition; fine-tuning something.
From 'tune' (possibly from Old French 'ton,' from Latin 'tonus'), plus the gerund suffix '-ing.' The word originally referred to musical pitch but now applies broadly.
We've stretched 'tuning' from music into engineering, computers, and performance—it's a metaphor so powerful that we've almost forgotten it started with musical instruments.
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