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  1. Solid - Wikipedia

    Solid is a state of matter in which atoms are closely packed and are difficult to move past each other. Solids resist compression, expansion, or external forces that would alter its shape, with the degree of …

  2. SOLID Definition & Meaning - Merriam-Webster

    The meaning of SOLID is being without an internal cavity. How to use solid in a sentence.

  3. What Is a Solid? Definition and Examples in Science

    Oct 19, 2020 · Because its particles are packed close together, a solid is rigid, doesn’t flow, and isn’t easily compressed. A solid is defined as a state of matter with a definite shape and volume.

  4. Solid | Definition & Facts | Britannica

    Nov 7, 2025 · A solid forms from liquid or gas because the energy of atoms decreases when the atoms take up a relatively ordered, three-dimensional structure. Solids exhibit certain characteristics that …

  5. Solid: Definition, Properties, Types, and Examples

    A solid is one of the fundamental states of matter, along with liquid and gas. It comprises particles such as atoms, ions, or molecules, packed closely together and held in fixed positions by intermolecular …

  6. SOLID | English meaning - Cambridge Dictionary

    SOLID definition: 1. hard or firm, keeping a clear shape: 2. completely hard or firm all through an object, or…. Learn more.

  7. SOLID definition in American English | Collins English Dictionary

    A solid is a substance that stays the same shape whether it is in a container or not. Solids turn to liquids at certain temperatures.

  8. Solid - definition of solid by The Free Dictionary

    1. Without a break or opening; completely or continuously: The theater was booked solid for a month. 2. As a whole; unanimously: The committee voted solid for the challenger.

  9. Solid - Definition, Meaning & Synonyms | Vocabulary.com

    At first glance, solid appears to be a simple word, but it really offers shades of meaning. A solid friend is dependable. If you give a solid performance, it was very good, though not quite great. Likewise, if …

  10. solid - WordReference.com Dictionary of English

    (of the parts that compose something) having firmness and sticking together: solid particles suspended in a liquid. having no openings or breaks: a solid wall. firm or compact in substance: standing on …