the quality of being physical; consisting of matter
n
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
(chemistry) the three traditional states of matter are solids (fixed shape and volume) and liquids (fixed volume and shaped by the container) and gases (filling the container)
n
the quality of being solid and reliable financially or factually or morally
“the solidness of her faith gave her enduring hope”