1
a
: being without an internal cavity
a solid ball of rubber
b(1)
: printed with minimum space between lines
(2)
: joined without a hyphen
a solid compound
c
: not interrupted by a break or opening
a solid wall
2
: having, involving, or dealing with three dimensions or with solids
a solid configuration
3
a
: of uniformly close and coherent texture : not loose or spongy : compact
b
: possessing or characterized by the properties of a solid : neither gaseous nor liquid
solid waste
4
5
a
: having no break or interruption
waited three solid hours
b
: unanimous
had the solid support of the party
c
: intimately friendly or associated
solid with the boss
6
a
: prudent
also
: well established financially
b
: serious in purpose or character
7
: of one substance or character: such as
a
: entirely of one metal or containing the minimum of alloy necessary to impart hardness
solid gold
b
: of a single color
solidly
adverb
solidness
noun
1
: a geometrical figure or element (such as a cube or sphere) having three dimensions see Volume Formulas Table
2
a
: a substance that does not flow perceptibly under moderate stress, has a definite capacity for resisting forces (such 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 of protein and lactose
3
: something that is solid: such as
a
: a solid color
b
: a compound word whose members are joined together without a hyphen
4
US slang
: favor sense 3a
Ted Evans might be one of those people. … "Can you do me a solid and watch my stuff?" he'll ask, returning the favor if anyone else needs to do the same.—Laylan Connelly
So her husband did her a solid and dropped her off for the afternoon, where she was free to sketch some of the exhibits …—Steven Lemongello
: in a solid manner
also
: unanimously
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Merriam-Webster unabridged
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