Definition of "unrotate"

unrotate

verb
third-person singular simple present unrotates, present participle unrotating, simple past and past participle unrotated
1. (surgery) Synonym of derotate (“to correct a rotational deformity”)
  Quotations
  Hence it seems to me the first thing to do is to unrotate the bodies of the vertebræ, because rotation was the first thing that took place. Then correct the lateral curvature.
  1894, Proceedings of the Philadelphia County Medical Society, page 170
2. (computer graphics) To undo a rotation.
  Quotations
  In other words, if you rotate a photo, crop it, and then change its contrast, you have to use the Undo command three times—first to undo the contrast change, then to uncrop, and finally to unrotate.
  2014, David Pogue, Lesa Snider, iPhoto: The Missing Manual, page 123