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
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:
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

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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