What is the meaning of Solid?

That can be picked up or held, having a texture, and usually firm. Unlike a liquid, gas or plasma.

Large in size, quantity, or value.

Lacking holes, hollows or admixtures of other materials.

Strong or unyielding.

Excellent, of high quality, or reliable.

Hearty; filling.

Worthy of credit, trust, or esteem; substantial; not frivolous or fallacious.

Financially well off; wealthy.

Sound; not weak.

Written as one word, without spaces or hyphens.

Not having the lines separated by leads; not open.

United; without division; unanimous.

Of a single color throughout.

Continuous; unbroken; not dotted or dashed.

Having all the geometrical dimensions; cubic.

Measured as a single solid, as the volumes of individual pieces added together without any gaps.

Solidly.

Without spaces or hyphens.

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.

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

Food which is not liquid-based.

solid, robust

strong

substantial

reliable

solid

solid

solid, firm

a solidus (Roman gold coin)

solid, massive, stable, reliable

solvent, in good financial standing

a solid body

Source: wiktionary.org