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  1. SOLID Definition & Meaning - Merriam-Webster

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

  2. 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 …

  3. SOLID | definition in the Cambridge English Dictionary

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

  4. Solid | Definition & Facts | Britannica

    Jan 31, 2026 · Solids exhibit certain characteristics that distinguish them from liquids and gases. All solids have, for example, the ability to resist forces applied either perpendicular or parallel to a …

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

    It comprises particles such as atoms, ions, or molecules, packed closely together and held in fixed positions by intermolecular forces. This tight arrangement gives solids a definite shape and volume …

  6. 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. In …

  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, Meaning & Synonyms | Vocabulary.com

    A solid, as opposed to a liquid or gas, has a size and shape to it. It doesn't flow like water or disappear into the air.

  9. 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.

  10. solid adjective - Definition, pictures, pronunciation and usage notes ...

    to be in a strong position in an argument, etc. because you know the facts. Everyone agreed with me, so I knew I was on firm ground.