solid

Length / number of characters: 5
Number of words: 1

United
Firm
having three dimensions
financially sound
not soft or yielding to pressure
Sound
providing abundant nourishment
of the same color throughout
matter that is solid at room temperature and pressure
the state in which a substance has no tendency to flow under moderate stress
a three-dimensional shape
characterized by good substantial quality
of definite shape and volume
entirely of one substance with no holes inside
of one substance or character throughout
uninterrupted in space
of good quality and condition
impenetrable for the eye
of a substantial character and not frivolous or superficial
meriting respect or esteem
acting together as a single undiversified whole
Having the constituent parts so compact, or so firmly adhering, as to resist the impression or penetration of other bodies
Not hollow
Having all the geometrical dimensions
Applied to a compound word whose parts are closely united and form an unbroken word
Fig.: Worthy of credit, trust, or esteem
Impenetrable
Not having the lines separated by leads
A substance that is held in a fixed form by cohesion among its particles
A magnitude which has length, breadth, and thickness

You can also check definition for solid on wikipedia or google (link opens in new window)