What does the word adamant mean?

Usage examples for adamant

  1. Having now wended his weary and unavailing way into all the places listed, John made his final report to Colette who remained adamant in her resolve. – Amarilly of Clothes-line Alley by Belle K. Maniates
  2. I was adamant, however, even when he agreed to compromise by leaving out the child. – Down the Columbia by Lewis R. Freeman
  3. A little dust of snow, fine and dry as flour, whirled about her, and the trail was hard as adamant beneath her pony's feet. – Delilah of the Snows by Harold Bindloss