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Related to ballast: Electrical ballast
1. Heavy material that is carried to improve stability or maintain proper trim, as on a ship, or to limit buoyancy, as on a balloon.
a. Coarse gravel or crushed rock laid to form a bed for roads or railroads.
b. The gravel ingredient of concrete.
3. Something that gives stability, especially in character.
tr.v. bal·last·ed, bal·last·ing, bal·lasts
1. To stabilize or provide with ballast.
2. To fill (a railroad bed) with or as if with ballast.
[Perhaps from Old Swedish or Old Danish barlast : bar, mere, bare; see bhoso- in Indo-European roots + last, load.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Nautical Terms) any dense heavy material, such as lead or iron pigs, used to stabilize a vessel, esp one that is not carrying cargo
2. (Civil Engineering) crushed rock, broken stone, etc, used for the foundation of a road or railway track
3. (Building) coarse aggregate of sandy gravel, used in making concrete
4. anything that provides stability or weight
5. (Electronics) electronics a device for maintaining the current in a circuit
to give stability or weight to
[C16: probably from Low German; related to Old Danish, Old Swedish barlast, literally: bare load (without commercial value), from bar bare, mere + last load, burden]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
1. a heavy material carried on a vessel to control draft and stability or a balloon to control altitude.
2. gravel or broken stone placed under the ties of a railroad.
3. a device that maintains the current in an electric circuit at a constant value and may also provide the starting voltage, as in a fluorescent lamp.v.t.
4. to furnish with ballast.
[1520–30; < Middle Low German, perhaps ultimately < Scandinavian; compare early Dan and Swedish barlast=bar bare1 + last load]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Past participle: ballasted
Collins English Verb Tables © HarperCollins Publishers 2011
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|Noun||1.||ballast - any heavy material used to stabilize a ship or airship|
|2.||ballast - coarse gravel laid to form a bed for streets and railroads|
|3.||ballast - an attribute that tends to give stability in character and morals; something that steadies the mind or feelings|
attribute - an abstraction belonging to or characteristic of an entity
|4.||ballast - a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)|
|5.||ballast - an electrical device for starting and regulating fluorescent and discharge lamps|
electrical device - a device that produces or is powered by electricity
|Verb||1.||ballast - make steady with a ballast|
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
noun counterbalance, balance, weight, stability, equilibrium, sandbag, counterweight, stabilizer She may have to discharge some ballast to make her lighter.
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
ballast[ˈbæləst] n (for boat) → lest m; (for hot air balloon) → lest mball bearing ball-bearing [ˌbɔːlˈbɛərɪŋ] n → roulement m à billesball boy n → ramasseur m de ballesball cock n → robinet m à flotteur
Collins English/French Electronic Resource. © HarperCollins Publishers 2005
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
ballast[ˈbæləst] n → zavorra
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995