jettison

1 of 2

verb

jet·​ti·​son ˈje-tə-sən How to pronounce jettison (audio)
-zən
jettisoned; jettisoning; jettisons

transitive verb

1
: to get rid of as superfluous or encumbering : omit or forgo as part of a plan or as the result of some other decision
must be prepared to jettison many romantic notionsChristopher Catling
2
: to drop (cargo) to lighten a ship's load in time of distress
3
: to drop from an aircraft or spacecraft in flight
jettisonable adjective

jettison

2 of 2

noun

: a voluntary sacrifice of cargo to lighten a ship's load in time of distress

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The Origin of Jettison

Jettison comes from the Anglo-French noun geteson (literally “action of throwing”), and ultimately from the Latin verb jactare, meaning “to throw.” The noun jettison refers to a voluntary sacrifice of cargo to lighten a ship’s load in time of distress, and is the source of the word jetsam, the word for goods that are so jettisoned; that word is often paired with flotsam (“floating wreckage”). These days you don’t have to be on a sinking ship to jettison something: the verb also means simply “to get rid of.”

Examples of jettison in a Sentence

Verb The captain gave orders to jettison the cargo. They jettisoned the fuel and made an emergency landing. We should jettison these old computers and get new ones. They jettisoned plans for a vacation. Noun with his ship rapidly sinking, the captain ordered a last-ditch jettison of much of its cargo
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Verb
The club also jettisoned German defender Jasper Loffelsend, who signed with a second-division club in Poland. Mark Zeigler, San Diego Union-Tribune, 19 July 2025 Trump seeks to jettison what has been the widespread understanding that the Constitution’s 14th Amendment confers citizenship on virtually everyone born on US soil. Alicia Adamczyk, Fortune, 28 June 2025
Noun
West Ham’s hierarchy often jettison managers when their Premier League status becomes precarious. Roshane Thomas, New York Times, 18 June 2025 All the statehouse needs to do is jettison this one misguided provision. Jim Amann, Hartford Courant, 17 June 2025 See All Example Sentences for jettison

Word History

Etymology

Noun and Verb

Middle English jetteson, from Anglo-French geteson, literally, action of throwing, from Latin jactation-, jactatio, from jactare — more at jet

First Known Use

Verb

1848, in the meaning defined at sense 2

Noun

15th century, in the meaning defined above

Time Traveler
The first known use of jettison was in the 15th century

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Cite this Entry

“Jettison.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/jettison. Accessed 4 Aug. 2025.

Kids Definition

jettison

verb
jet·​ti·​son
ˈjet-ə-sən,
-ə-zən
1
: to throw goods overboard from a ship or aircraft especially to lighten it in distress
2
jettison noun

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