Solid is one of the four fundamental states of matter . It is characterized by structural rigidity and resistance to changes of shape or volume. Unlike a liquid, a solid object does not flow to take on the shape of its container, nor does it expand to fill the entire volume available to it like a gas does. The atoms in a solid are tightly bound to each other, either in a regular geometric lattice or irregularly .

The above text is a snippet from Wikipedia: Solid
and as such is available under the Creative Commons Attribution/Share-Alike License.


In computer programming, SOLID is a mnemonic acronym introduced by Michael Feathers for the "first five principles" identified by Robert C. Martin in the early 2000s that stands for five basic principles of object-oriented programming and design. The principles when applied together intend to make it more likely that a programmer will create a system that is easy to maintain and extend over time. The principles of SOLID are guidelines that can be applied while working on software to remove code smells by causing the programmer to refactor the software's source code until it is both legible and extensible. It is typically used with test-driven ...

The above text is a snippet from Wikipedia: SOLID (object-oriented design)
and as such is available under the Creative Commons Attribution/Share-Alike License.



  1. A substance in the fundamental state of matter that retains its size and shape without need of a container (as opposed to a liquid or gas).
  2. A three-dimensional figure (as opposed to a surface, an area, or a curve).
  3. A Favor.
    Please do me a solid: lend me your car for one week.
    I owe him, he did me a solid last year.
  4. An article of clothing which is of a single color throughout.
    I prefer solids over paisleys.
  5. Food which is not liquid-based.
    The doctor said I can't eat any solids four hours before the operation.


  1. In the state of a solid; not fluid.
  2. Large, massive.
  3. Lacking holes or hollows; as solid gold, solid chocolate.
  4. Strong or unyielding.
    a solid foundation
  5. Excellent, of high quality, or reliable.
    That's a solid plan.
    Radiohead's on tour! Have you heard their latest album yet? It's quite solid.
    I don't think Dave would have done that. He's a solid dude.
  6. Hearty; filling.
    a solid meal
  7. Worthy of credit, trust, or esteem; substantial; not frivolous or fallacious.
  8. Sound; not weakly.
    a solid constitution of body
  9. Written as one word, without spaces or hyphens.
    American English writes many words as solid that British English hyphenates.
  10. Not having the lines separated by leads; not open.
  11. United; without division; unanimous.
    The delegation is solid for a candidate.
  12. Of a single color throughout.
    John painted the walls solid white.
    He wore a solid shirt with floral pants.
  13. Having all the geometrical dimensions; cubic.
    A solid foot contains 1,728 solid inches.


  1. Solidly.
  2. Without spaces or hyphens.
    Many long-established compounds are set solid.

The above text is a snippet from Wiktionary: solid
and as such is available under the Creative Commons Attribution/Share-Alike License.

Need help with a clue?
Try your search in the crossword dictionary!