What does the word distortion mean?

Usage examples for distortion

  1. Even as he raised the arm a frightful distortion seized on his face. – Man and Wife by Wilkie Collins
  2. I can yet recall the individual shapes of certain hawthorn trees we passed, whose extreme age had found expression in a wild grotesqueness which would have been ridiculous but for a dim, painful resemblance to the distortion of old age in the human family. – Wilfrid Cumbermede by George MacDonald