ballast
Definition from Wiktionary, the free dictionary
See also Ballast
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English [edit]
Etymology [edit]
From Middle English bar (“bare”) + last (“load”).
Pronunciation [edit]
Noun [edit]
ballast (usually uncountable; plural ballasts)
- (nautical) Heavy material that is placed in the hold of a ship (or in the gondola of a balloon), to provide stability.
- (figuratively) Anything that steadies emotion or the mind.
- Coarse gravel or similar material laid to form a bed for roads or railroads.
- (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.
- (countable, electronics) device used for stabilizing current in an electric circuit (e.g.in a tube lamp supply circuit)
Translations [edit]
heavy material placed in the hold of a vessel
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material laid to form a bed for a road
electronics
- The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.
Verb [edit]
ballast (third-person singular simple present ballasts, present participle ballasting, simple past and past participle ballasted)
Translations [edit]
to stabilize a ship with ballast
to lay ballast on the bed of a railway track
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French [edit]
Pronunciation [edit]
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Audio (Fr) (file)
Noun [edit]
- (nautical) Heavy material that is placed in the hold of a ship (or in the gondola of a balloon), to provide stability.
- Coarse gravel or similar material laid to form a bed for roads or railroads.
Swedish [edit]
Adjective [edit]
ballast
- superlative predicative form of ball.