What does the word exist mean?

Usage examples for exist

  1. But when I note that the red object is square, I am supposed to know a property that will continue to exist in the object after I have closed my eyes or turned to something else. – The Approach to Philosophy by Ralph Barton Perry
  2. Owen- her name- position- future- had been as if they did not exist. – Desperate Remedies by Thomas Hardy
  3. If there were other reasons, they no longer exist. – Concerning Sally by William John Hopkins