solid

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solid

 [sol´id]
1. not fluid or gaseous; not hollow.
2. a substance or tissue not fluid or gaseous.

sol·id

(sol'id),
1. Firm; compact; not fluid; without interstices or cavities; not cancellous.
2. A body that retains its form when not confined; one that is not fluid, neither liquid nor gaseous.
[L. solidus]

solid

[sol′id]
Etymology: L, solidus
1 n, a dense body, figure, structure, or substance that has length, breadth, and thickness, is not a liquid or a gas, contains no significant cavity or hollowness, and has no breaks or openings on its surface.
2 adj, describing such a body, figure, structure, or substance.

solid

Physics
adjective Referring to a substance that is not liquid or gas.
 
noun A substance, material or object that is not a liquid or gas.

sol·id

(sol'id)
1. Firm; compact; not fluid; without interstices or cavities; not cancellous.
2. A body that retains its form when not confined; one that is not fluid, neither liquid nor gaseous.
[L. solidus]

solid

1. not fluid or gaseous; not hollow.
2. a substance or tissue not fluid or gaseous.

solid color
said of animal haircoats; the same color all over the animal.