SOLIDITY
solidity, solidness
(noun) the quality of being solid and reliable financially or factually or morally; āthe solidity of the evidence worked in his favorā; āthe solidness of her faith gave her enduring hopeā
solidity, solidness
(noun) the consistency of a solid
solidity
(noun) state of having the interior filled with matter
Source: WordNet® 3.1
Etymology
Noun
solidity (countable and uncountable, plural solidities)
The state or quality of being solid.
Moral firmness; validity; truth; certainty.
(geometry) The solid contents of a body; volume; amount of enclosed space.
Synonyms
• compactness
• consistency
• density
• fullness
• hardness
• massiveness
• solidness
• soundness
• strength
Antonyms
• fluidity
• hollowness
• instability
• openness
• weakness
Source: Wiktionary
So*lid"i*ty, n. Etym: [L. soliditas: cf. F. soliditƩ.]
1. The state or quality of being solid; density; consistency, --
opposed to fluidity; compactness; fullness of matter, -- opposed to
openness or hollowness; strength; soundness, -- opposed to weakness
or instability; the primary quality or affection of matter by which
its particles exclude or resist all others; hardness; massiveness.
That which hinders the approach of two bodies when they are moving
one toward another, I call solidity. Locke.
2. Moral firmness; soundness; strength; validity; truth; certainty; -
- as opposed to weakness or fallaciousness; as, the solidity of
arguments or reasoning; the solidity of principles, triuths, or
opinions.
3. (Geom.)
Definition: The solid contents of a body; volume; amount of inclosed space.
Syn.
– Firmness; solidness; hardness; density; compactness; strength;
soundness; validity; certainty.
Source: Webster’s Unabridged Dictionary 1913 Edition