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).

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.

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.

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.

1. To stabilize or provide with ballast. 2. To fill (a railroad bed) with or as if with ballast.

Definition of ballast noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

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.

BALLAST meaning: heavy material (such as rocks or water) that is put on a ship to make it steady or on a balloon to control its height in the air often used figuratively

Ballast definition: Heavy material that is placed in the hold of a ship or the gondola of a balloon to enhance stability.

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.