Dictionary

A substance in the fundamental state of matter that retains its size and shape without need of a container (as opposed to a liquid or gas).

A three-dimensional figure (as opposed to a surface, an area, or a curve).

A favor.

Example: I owe him; he did me a solid last year.

An article of clothing which is of a single color throughout.

Example: I prefer solids over paisleys.

(of an object or substance) That can be picked up or held, having a texture, and usually firm. Unlike a liquid or a gas.

Example: Almost all metals are solid at room temperature.

Large in size, quantity, or value.

Lacking holes, hollows or admixtures of other materials.

Example: solid chocolate

Strong or unyielding.

Example: a solid foundation

Solidly.

Without spaces or hyphens.

Example: Many long-established compounds are set solid.