solid

n. figure or object having three dimensions; substance that is not a liquid or a gas, substance exhibiting rigidity

adj. three-dimensional; not liquid or gas, hard; having not interior cavities, not hollow; pure, unmixed; continuous; strong, stable; sound, reliable; united; unanimous; serious, substantial; thorough

A solid object is in the states of matter characterized by resistance to deformation and changes of volume. At the microscopic scale, a solid has these properties :The atoms or molecules that comprise the solid are packed closely together.These constituent elements have fixed positions in space relative to each other. This accounts for the solid's rigidity. In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. A crystal structure is composed of a unit cell, a set of atoms arranged in a particular way; which is periodically repeated in three dimensions on a lattice. The spacing between unit cells in various directions is called its lattice parameters. The symmetry properties of the crystal are embodied in its space group. A crystal's structure and symmetry play a role in determining many of its properties, such as cleavage, electronic band structure, and optical properties.If sufficient force is applied, either of these properties can be violated, causing permanent deformation.Because any solid has some thermal energy, its atoms vibrate. However, this movement is very small, and cannot be observed or felt under ordinary conditions.
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Noun
1. a substance that is solid at room temperature and pressure
(hypernym) substance, matter
(hyponym) food
(derivation) solidify
2. the state in which a substance has no tendency to flow under moderate stress; resists forces (such as compression) that tend to deform it; and retains a definite size and shape
(synonym) solidness
(hypernym) state of matter, state
(derivation) solidify
3. a three-dimensional shape
(hypernym) shape, form
(hyponym) convex shape, convexity
(derivation) solidify
Adjective
1. of definite shape and volume; firm; neither liquid nor gaseous; "ice is water in the solid state"
(antonym) liquid
(similar) coagulated, solidified
(see-also) hard
(attribute) state of matter, state
2. of good substantial quality; "solid comfort"; "a solid base hit"
(similar) good
3. entirely of one substance with no holes inside; "solid silver"; "a solid block of wood"
(antonym) hollow
(similar) massive
(attribute) solidity
4. of one substance or character throughout; "solid gold"; "a solid color"; "carved out of solid rock"
(similar) homogeneous, homogenous
5. uninterrupted in space; having no gaps or breaks; "a solid line across the page"; "solid sheets of water"
(similar) unbroken
6. providing abundant nourishment; "a hearty meal"; "good solid food"; "ate a substantial breakfast"
(synonym) hearty, satisfying, substantial
(similar) wholesome
7. of good quality and condition; solidly built; "a solid foundation"; "several substantial timber buildings"
(synonym) strong, substantial
(similar) sound
8. having high moral qualities; "a noble spirit"; "a solid citizen"; "an upstanding man"; "a worthy successor"
(synonym) noble, upstanding, worthy
(similar) honorable, honourable
9. not soft or yielding to pressure; "a firm mattress"; "the snow was firm underfoot"; "solid ground"
(synonym) firm
(similar) hard
10. having three dimensions; "a solid object"
(similar) cubic, three-dimensional
11. incapable of being seen through; "solid blackness"
(similar) opaque
12. entirely of a single color throughout; "a solid fabric"
(synonym) self-colored, self-coloured
(similar) plain, unpatterned
13. acting together as a single undiversified whole; "a solid voting bloc"
(synonym) unanimous
(similar) undiversified, unvaried

adj. solid, strong; stable; secure

(n.)
A substance that is held in a fixed form by cohesion among its particles; a substance not fluid.
  

(n.)
A magnitude which has length, breadth, and thickness; a part of space bounded on all sides.
  

(a.)
United; without division; unanimous; as, the delegation is solid for a candidate.
  

(a.)
Sound; not weakly; as, a solid constitution of body.
  

(a.)
Of a fleshy, uniform, undivided substance, as a bulb or root; not spongy or hollow within, as a stem.
  

(a.)
Not hollow; full of matter; as, a solid globe or cone, as distinguished from a hollow one; not spongy; dense; hence, sometimes, heavy.
  

(a.)
Not having the lines separated by leads; not open.
  

(a.)
Impenetrable; resisting or excluding any other material particle or atom from any given portion of space; -- applied to the supposed ultimate particles of matter.
  

(a.)
Having the constituent parts so compact, or so firmly adhering, as to resist the impression or penetration of other bodies; having a fixed form; hard; firm; compact; -- opposed to fluid and liquid or to plastic, like clay, or to incompact, like sand.
  

(a.)
Having all the geometrical dimensions; cubic; as, a solid foot contains 1,728 solid inches.
  

(a.)
Firm; compact; strong; stable; unyielding; as, a solid pier; a solid pile; a solid wall.
  

(a.)
Fig.: Worthy of credit, trust, or esteem; substantial, as opposed to frivolous or fallacious; weighty; firm; strong; valid; just; genuine.
  

(a.)
Applied to a compound word whose parts are closely united and form an unbroken word; -- opposed to hyphened.