having three dimensions (length, breadth, and thickness), as a geometrical body or figure.

of or pertaining to bodies or figures of three dimensions.

having the interior completely filled up, free from cavities, or not hollow

a solid piece of chocolate.

without openings or breaks

a solid wall.

firm, hard, or compact in substance

solid ground.

having relative firmness, coherence of particles, or persistence of form, as matter that is not liquid or gaseous

solid particles suspended in a liquid.

pertaining to such matter

Water in a solid state is ice.

dense, thick, or heavy in nature or appearance

solid masses of cloud.

not flimsy, slight, or light, as buildings, furniture, fabrics, or food; substantial.

of a substantial character; not superficial, trifling, or frivolous

a solid work of scientific scholarship.

without separation or division; continuous

a solid row of buildings.

whole or entire

one solid hour.

forming the whole; consisting entirely of one substance or material

solid gold.

uniform in tone or shades, as a color

a solid blue dress.

real or genuine

solid comfort.

sound or reliable, as reasons or arguments

solid facts.

sober-minded; fully reliable or sensible

a solid citizen.

financially sound or strong

Our company is solid.

cubic

A solid foot contains 1728 solid inches.

written without a hyphen, as a compound word.

having the lines not separated by leads, or having few open spaces, as type or printing.

thorough, vigorous, great, big, etc. (with emphatic force, often after good )

a good solid blow.

firmly united or consolidated

a solid combination.

united or unanimous in opinion, policy, etc.

on a friendly, favorable, or advantageous footing (often prec. by in )

He was in solid with her parents.

Slang . excellent, esp. musically.

a body or object having three dimensions (length, breadth, and thickness).

a solid substance or body; a substance exhibiting rigidity.

adjective

fluid , gaseous , insubstantial , liquid , soft , vaporous , broken , divided , incomplete , incontinuous , intermittent , tenuous , undependable , unreliable , untrustworthy , vulnerable , fallacious , hollow , incompact , plastic , porous , spongy , unstable

adjective

brick wall , close , compact , compacted , concentrated , concrete , consolidated , dense , firm , fixed , heavy , hefty , hulk , hunk , husky , massed , material , physical , rock , rocklike , rooted , secure , set , sound , stable , strong , sturdy , substantial , thick , tight , unshakable , agreed , consecutive , consentient , continued , like a rock , regular , set in stone , steady , unalloyed , unanimous , unbroken , undivided , uninterrupted , united , unmixed , cogent , constant , decent , estimable , genuine , good , law-abiding , levelheaded , pure , real , satisfactory , satisfying , sensible , serious , sober , stalwart , steadfast , trustworthy , trusty , upright , upstanding , valid , worthy , hard , incompressible , sure , just , well-founded , well-grounded , reliable , responsible , concretionary , consistent , continuous , convincing , cubic , dependable , durable , full , impenetrable , impermeable , imporous , lasing , level , massive , monolithic , ponderable , rugged , sterling , stiff , thorough , unyielding , weighty