Jettison definition

jĕtĭ-sən, -zən
To throw (goods) overboard.
verb
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To discard (something) as useless or a burden.
verb
3
1
The definition of jettison is to cast something aside, abandon it or throw it away.

When you cast aside your old interest in music and throw away your old instruments, this is an example of a situation where you jettison your love of music.

verb
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(informal) To discard (something) as unwanted or burdensome.

Jettisoned the whole marketing plan.

verb
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The act of discarding or casting overboard.
noun
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Jetsam.
noun
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A throwing overboard of goods to lighten a ship, airplane, etc. in an emergency.
noun
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noun
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(uncountable) Collectively, items that have been or are about to be ejected from a boat or balloon.
noun
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(countable) The action of jettisoning items.
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To eject from a boat, submarine, aircraft, spaceship or hot-air balloon, so as to lighten the load.

The ballooners had to jettison all of their sand bags to make it over the final hill.

The jettisoning of fuel tanks.

verb
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To let go or get rid of as being useless or defective; discard.
verb
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To cast overboard or off.

A ship jettisoning wastes; a pilot jettisoning aircraft fuel.

verb
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1

Other Word Forms

Noun

Singular:
jettison
Plural:
jettisons

Origin of jettison

  • From Middle English jetteson a throwing overboard of goods to lighten ship from Anglo-Norman getteson from Vulgar Latin iectātiō iectātiōn- from iectātus past participle of *iectāre to throw jet2

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Anglo-Norman getteson, from Old French getaison (French: would be *jetaison like pendaison). Cognate to jetsam

    From Wiktionary