: a geometrical figure or element (as a cube or sphere) having three dimensions — see volume table
a: a substance that does not flow perceptibly under moderate stress, has a definite capacity for resisting forces (as compression or tension) which tend to deform it, and under ordinary conditions retains a definite size and shape
b: the part of a solution or suspension that when freed from solvent or suspending medium has the qualities of a solid —usually used in plural <milk solids>
: something that is solid: as
a: a solid color
b: a compound word whose members are joined together without a hyphen
One of the three basic states of matter. A solid forms from either a liquid or a gas (the other two states of matter) because, as the energy of the atoms decreases, they coalesce in the relatively ordered, three-dimensional structure of a solid. All solids have the ability to support loads applied either perpendicular (normal) or parallel (shear) to a surface. Solids can be crystalline (as in metals), amorphous (as in glass), or quasicrystalline (as in certain metal alloys), depending on the degree of order in the arrangement of the atoms.