What is the definition of solid?

Answer 1

The term solid in physics denotes a state of matter having a fixed volume and a definite shape, which is not generally compressible.

Other Definitions of Solid

• characterized by good substantial quality; "solid comfort"; "a solid base hit"
• entirely of one substance with no holes inside; "a solid block of wood"
• of one substance or character throughout; "solid gold"; "carved out of solid rock"
• uninterrupted in space; having no gaps or breaks; "a solid line across the page"; "solid sheets of water"
• hearty: providing abundant nourishment; "a hearty meal"; "good solid food"; "ate a substantial breakfast"; "four square meals a day"
• of good quality and condition; solidly built; "a solid foundation"; "several substantial timber buildings"
• firm: not soft or yielding to pressure; "a firm mattress"; "the snow was firm underfoot"; "solid ground"
• having three dimensions; "a solid object"
• incapable of being seen through; "solid blackness"
• financially sound; "the bank is solid and will survive this attack"
• of a substantial character and not frivolous or superficial; " work of solid scholarship"; "based on solid facts"
• of the same color throughout; "solid color"
• worthy: morally admirable; "a worthy citizen"
• 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
• a three-dimensional shape
• acting together as a single undiversified whole; "a solid voting bloc"

Answer 2

A solid is a state of matter characterized by a fixed shape and volume, with particles closely packed together in a regular pattern. Solids have a high degree of structural rigidity and exhibit resistance to deformation under normal conditions.