D defs.my
Entry 2 senses Webster, 1913

Solidness

· Sol·id·ness · IPA
01 n. State or quality of being solid; firmness; compactness; solidity, as of material bodies.
  1. 1.
    State or quality of being solid; firmness; compactness; solidity, as of material bodies.
  2. 2.
    Soundness; strength; truth; validity, as of arguments, reasons, principles, and the like.