What does the word conjectural mean?

Usage examples for conjectural

  1. It aims toward objectivity: in its conjectural construction it attempts to reproduce the order and connection of things. – Essay on the Creative Imagination by Th. Ribot
  2. What part electricity plays in this process is, of course, only conjectural. – The Breath of Life by John Burroughs
  3. But there is no knowing what terms conjectural etymology may not contrive to identify, or at least to approximate and ally. – The Grammar of English Grammars by Goold Brown