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  1. BALLAST Definition & Meaning - Merriam-Webster

    The meaning of BALLAST is a heavy substance (such as rocks or water) placed in such a way as to improve stability and control (as of the draft of a ship or the buoyancy of a balloon or submarine).

  2. What Is a Ballast in a Light Fixture? Understanding Ballast Types and ...

    Aug 7, 2017 · Learn what a ballast is in a light fixture, how it works, the different types available, and their importance in lighting systems. Discover insights for both residential and commercial applications.

  3. Ballast - Wikipedia

    Ballast is dense material used as a weight to provide stability to a vehicle or structure. Ballast, other than cargo, may be placed in a vehicle, often a ship or the gondola of a balloon or airship, to provide stability.

  4. BALLAST | English meaning - Cambridge Dictionary

    BALLAST definition: 1. heavy matter such as sand, stone, or water that is used at the bottom of a ship or a hot-air…. Learn more.

  5. National Ballast Information Clearinghouse

    Aug 12, 2025 · NBIC was established in 1997 at the direction of the National Invasive Species Act of 1996 (NISA). Ballast water data are available for download from our online database.

  6. BALLAST Definition & Meaning | Dictionary.com

    BALLAST definition: any heavy material carried temporarily or permanently in a vessel to provide desired draft and stability. See examples of ballast used in a sentence.

  7. 111. What Exactly Is a Ballast and Why Does It Matter?

    Aug 26, 2024 · Find out what a ballast is and why it's important in lighting. This guide explains the types of ballasts, their functions, and how they impact energy efficiency.

  8. ballast - WordReference.com Dictionary of English

    Also called ballast resistor. a device, often a resistor, that maintains the current in a circuit at a constant value by varying its resistance in order to counteract changes in voltage.

  9. Understanding Ballast: Types, Functions, and Applications

    Ballast refers to material that is used to provide stability to a system, counteracting forces that may create instability. It serves as a foundational component, ensuring that structures do not sway or tip …

  10. BALLAST definition and meaning | Collins English Dictionary

    Ballast is any substance that is used in ships or hot-air balloons to make them heavier and more stable. Ballast usually consists of water, sand, or iron.