What does the word increment mean?

Usage examples for increment

  1. Peter did not say that the " pickings," as they framed themselves in his mind, were sundry calls on him at his office, and a justifiable reason at all times for calling on Leonore; to say nothing of letters and other unearned increment. – The Honorable Peter Stirling and What People Thought of Him by Paul Leicester Ford
  2. He said that nearly everything of value in the illustrations of Gibson's book was the work not of the artist but of the engraver who, he declared, had " added increment after increment of value" to the crude original drawings. – Recollections of a Varied Life by George Cary Eggleston
  3. If he put the same work on Cavour, he would get the unearned increment. – Humanly Speaking by Samuel McChord Crothers