What does the word pendulum mean?

Usage examples for pendulum

  1. He found that there was a certain pendulum- swing of mood in Paradise. – The Nest, The White Pagoda, The Suicide, A Forsaken Temple, Miss Jones and The Masterpiece by Anne Douglas Sedgwick
  2. Meanwhile Jonah swung like a pendulum between hope and despair. – Jonah by Louis Stone
  3. His sense of persons- moving, pleasure- or- pain- giving, uncertain but self- directing persons- is now to become a sense of agency, of power, which is yet not the power of the regular- moving door on its hinges or the rhythmic swinging of the pendulum of the clock. – The Story of the Mind by James Mark Baldwin