solid

Dictionary definition · solid

matter that is solid at room temperature and pressure
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 object, structurally rigid, usually resistant to changes of shape or volume

characterized by good substantial quality"solid comfort"
of definite shape and volume; firm; neither liquid nor gaseous"ice is water in the solid state"
entirely of one substance with no holes inside"a solid block of wood"
of one substance or character throughout"solid gold"
uninterrupted in space; having no gaps or breaks"a solid line across the page"
providing abundant nourishment"a hearty meal"
of good quality and condition; solidly built"a solid foundation"
not soft or yielding to pressure"a firm mattress"
having length, breadth and thickness"a cube is a solid figure with six sides"

Source: Open English WordNet (CC BY 4.0).