What is the meaning of understood?

verb

• Know and comprehend the nature or meaning of.
  • usage: "She did not understand her husband"; "I understand what she means"
  • synonyms: understand
• Perceive (an idea or situation) mentally.
  • usage: "Now I see"; "I just can't see your point"; "Does she realize how important this decision is"; "I don't understand the idea"
  • synonyms: understand, realize, realise, see
• Make sense of a language.
  • usage: "She understands French"; "Can you read Greek"
  • synonyms: understand, read, interpret, translate
• Believe to be the case.
  • usage: "I understand you have no previous experience"
  • synonyms: understand, infer
• Be understanding of.
  • usage: "You don't need to explain-I understand"
  • synonyms: sympathize, sympathise, empathize, empathise, understand

adjective

• Fully apprehended as to purport or meaning or explanation.
  • usage: "the understood conditions of troop withdrawal were clear"
• Implied by or inferred from actions or statements.
  • usage: "gave silent consent"; "a tacit agreement"; "the understood provisos of a custody agreement"
  • synonyms: silent, tacit