What does the word dilate mean?

Usage examples for dilate

  1. My brain seems to dilate! – The Mystery of a Turkish Bath by E.M. Gollan (AKA Rita)
  2. Later still, he would become sentimental again; and dilate to me on the joys of his wedded life, on the extraordinary of intellect and beauty of Mrs. Lintot. – Peter Ibbetson by George Du Maurier
  3. But upon this subject I cannot bear to dilate. – The Best Psychic Stories by Various