"solidity" in the noun sense
1. solidity, solidness
the consistency of a solid
2. solidity
state of having the interior filled with matter
3. solidity, solidness
the quality of being solid and reliable financially or factually or morally
"the solidity of the evidence worked in his favor"
"the solidness of her faith gave her enduring hope"
Source: WordNet® (An amazing lexical database of English)
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