Wiktionary
retuning
n. The act by which something is retuned; a subsequent tuning. vb. (present participle of retune English)
Usage examples of "retuning".
Apparently some enemy had crept in during the night and screwed every one of the carburetor adjustments, causing them all to need retuning.
However, the mechanism will need retuning at regular intervals, as natural radioactive decay will alter compositions unpredictably.
Three spells later, two goblets of water, and more retunings than that, she had a passably decent recital—or court—gown, a dressing robe, and a nightgown.