What does the word atom mean?

Usage examples for atom

  1. Then the dream slowly faded, and as reality took its place I knew that I was that atom! – 'Brother Bosch', an Airman's Escape from Germany by Gerald Featherstone Knight
  2. Each was striving to the last atom of his will- power to break down the resistance of the other and force him in some way to take the initiative. – The Lost Valley by J. M. Walsh