- (n.) 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.
- (n.) 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.
- (n.) The solid contents of a body; volume; amount of inclosed space.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). solidity. Retrieved September 22, 2026, from http://smartdefine.org/solidity/definitions/2063834 |
| Chicago | Webster's. 2011. "solidity" http://smartdefine.org/solidity/definitions/2063834 (accessed September 22, 2026). |
| Harvard | Webster's 2011, solidity, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/solidity/definitions/2063834>. |
| MLA | Webster's. "solidity" 28 May 2011. Web. 22 September 2026. <http://smartdefine.org/solidity/definitions/2063834> |