- 1. n any heavy material used to stabilize a ship or airship n coarse gravel laid to form a bed for streets and railroads n an attribute that tends to give stability in character and morals; something that steadies the mind or feelings n a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations) n an electrical device for starting and regulating fluorescent and discharge lamps v make steady with a ballast Source: ecdict
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