Ballast meaning

băləst
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An electrical device used to supply and regulate electricity in fluorescent lamps, mercury-vapor lamps, etc.
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The definition of ballast is something that provides security and balance.

An example of ballast for some people is their belief in God.

An example of ballast on a boat is gravel used to balance or make the boat stable.

An example of ballast is bags of sand in a hot air balloon.

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Heavy material that is placed in the hold of a ship or the gondola of a balloon to enhance stability.
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Something that gives stability, especially in character.
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To stabilize or provide with ballast.
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To fill (a railroad bed) with or as if with ballast.
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Anything heavy carried in a ship, aircraft, or vehicle to give stability or in a balloon or airship to help control altitude.
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Anything giving stability and firmness to character, human relations, etc.
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Crushed rock or gravel, as that placed between and below railroad ties.
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To furnish with ballast; stabilize.
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To fill in (a railroad bed) with ballast.
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(nautical) Heavy material that is placed in the hold of a ship (in the gondola of a balloon), to provide stability.
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(figuratively) Anything that steadies emotion or the mind.
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Coarse gravel or similar material laid to form a bed for roads or railroads, or in making concrete.
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(construction) A material, such as aggregate or precast concrete pavers, which employs its mass and the force of gravity to hold single-ply roof membranes in place.
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(countable, electronics) Device used for stabilizing current in an electric circuit (e.g.in a tube lamp supply circuit)
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(figuratively) That which gives, or helps to maintain, uprightness, steadiness, and security.
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To lay ballast on the bed of a railroad track.
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To stabilize or load a ship with ballast.
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Origin of ballast

  • Perhaps from Old Swedish or Old Danish barlast bar mere, bare bhoso- in Indo-European roots last load

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle English bar (“bare”) + last (“load”).

    From Wiktionary