What is the meaning of solidness?

noun

• The state in which a substance has no tendency to flow under moderate stress; resists forces (such as compression) that tend to deform it; and retains a definite size and shape.
  • synonyms: solid, solid state
• The consistency of a solid.
  • synonyms: solidity
• The quality of being substantial or having substance.
  • synonyms: substantiality, substantialness
• The quality of being solid and reliable financially or factually or morally.
  • usage: "the solidity of the evidence worked in his favor"; "the solidness of her faith gave her enduring hope"
  • synonyms: solidity