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Ballast
01
lest, ballast
a heavy substance placed in a ship's hull or an airship's tanks to lower its center of gravity and counteract unwanted tilting, rolling, or drifting
Exemples
To climb above the mountain pass, the dirigible pilot jettisoned ballast sandbags.
Pour grimper au-dessus du col de montagne, le pilote du dirigeable a largué des sacs de lest.
02
ballast, ballast électrique
an electrical device used to start and regulate the current in fluorescent or discharge lamps
Exemples
A new electronic ballast made the lamp more energy-efficient.
Un nouveau ballast électronique a rendu la lampe plus économe en énergie.
03
ballast
something that provides mental, emotional, or moral stability
Exemples
Friendship can be a ballast against the stresses of modern life.
L'amitié peut être un ballast contre les stress de la vie moderne.
04
ballast, pierre concassée
crushed stone laid to form a stable foundation for roads or railway tracks
Exemples
The track ballast helps drain water and keep rails properly aligned.
Le ballast aide à drainer l'eau et à maintenir les rails correctement alignés.
to ballast
01
lest, stabiliser
to make something stable or balanced by adding or using ballast, which is a heavy material used to provide stability
Exemples
Engineers ballast the bridge supports to keep them steady during construction.
Les ingénieurs ballastent les supports du pont pour les maintenir stables pendant la construction.
