What is the meaning of suppose?

verb

• Express a supposition.
  • usage: "Let us say that he did not tell the truth"; "Let's say you had a lot of money-what would you do"
  • synonyms: say
• Expect, believe, or suppose.
  • usage: "I imagine she earned a lot of money with her new novel"; "I thought to find her in a bad state"; "he didn't think to find her in the kitchen"; "I guess she is angry at me for standing her up"
  • synonyms: think, opine, imagine, reckon, guess
• To believe especially on uncertain or tentative grounds.
  • usage: "Scientists supposed that large dinosaurs lived in swamps"
  • synonyms: speculate, theorize, theorise, conjecture, hypothesize, hypothesise, hypothecate
• Take for granted or as a given; suppose beforehand.
  • usage: "I presuppose that you have done your work"
  • synonyms: presuppose
• Require as a necessary antecedent or precondition.
  • usage: "This step presupposes two prior ones"
  • synonyms: presuppose