ballast

noun · verbB1

Định nghĩa theo từ loại

Danh từ

noun

Plural noun:

ballasts

1.
(uncountable, usually)(nautical) Heavy material that is placed in the hold of a ship (or in the gondola of a balloon), to provide stability.
2.
(figuratively, uncountable, usually)(figurative) Anything that steadies emotion or the mind.
3.
(uncountable, usually)Coarse gravel or similar material laid to form a bed for roads or railroads, or in making concrete; track ballast.
4.
(uncountable, usually)(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.
5.
(countable, usually)(countable, electricity, electronics) device used for stabilizing current in an electric circuit (e.g. in a tube lamp supply circuit)
6.
(figuratively, uncountable, usually)(figurative) That which gives, or helps to maintain, uprightness, steadiness, and security.

Động từ

verb

V_es/s

ballasts

V_ing/Gerund

ballasting

V_ed/pp

ballasted

1.
(transitive)To stabilize or load a ship with ballast.
2.
(transitive)To lay ballast on the bed of a railroad track.
3.
(transitive)To weigh down with a ballast.

Từ liên quan

Cùng gốc / liên quan

unballastedautoballasterballast wagonballast resistorballast tankin ballastin ballast conditionballast carballastageballastlessdeballastoverballast unballastballastmasterwater ballastsuccess ballast

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Nguồn gốc từ

From Middle English bar (bare) + last (load).