Solid Definition

sŏlĭd
solidest, solids, solider
adjective
solidest, solider
Of definite shape and volume; not liquid or gaseous.
It was so cold the water in the bucket became solid.
American Heritage
Tending to keep its form rather than to flow or spread out like a liquid or gas; relatively firm or compact.
Webster's New World
Of or relating to three-dimensional geometric figures or bodies.
American Heritage
Filled with matter throughout; not hollow.
Webster's New World
Having the three dimensions of length, breadth, and thickness.
Prisms and other solid figures.
Webster's New World
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noun
solids
A substance that is solid, not a liquid or gas.
Webster's New World
An object or figure having or represented as having length, breadth, and thickness.
Webster's New World
A geometric figure having three dimensions.
American Heritage

(informal) A Favor.

Please do me a solid: lend me your car for one week.
I owe him, he did me a solid last year.
Wiktionary

An article of clothing which is of a single color throughout.

I prefer solids over paisleys.
Wiktionary
Synonyms:
solid statesolidnessfixed shapethree-dimensional shapemassbodysolid body
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adverb
Without a break or opening; completely or continuously.
The theater was booked solid for a month.
American Heritage
As a whole; unanimously.
The committee voted solid for the challenger.
American Heritage
Wiktionary

(not comparable, typography) Without spaces or hyphens.

Many long-established compounds are set solid.
Wiktionary
abbreviation
(programming, object-oriented) Acronym of Single responsibility, Open-closed, Liskov substitution, Interface segregation and Dependency inversion. (When followed, the created system will be more likely easy to maintain, and extend over time.)
Wiktionary
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Other Word Forms of Solid

Noun

Singular:
solid
Plural:
solids

Adjective

Base Form:
solid
Comparative:
solider
Superlative:
solidest

Origin of Solid

  • Middle English solide from Old French from Latin solidus sol- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Old French solide (as an adjective), from Latin solidus (“solid").

    From Wiktionary

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