Definition of jettison in English:


Line breaks: jet¦ti|son
Pronunciation: /ˈdʒɛtɪs(ə)n
, -z(ə)n/


[with object]


[mass noun] Back to top  
  • The action of jettisoning something: [as modifier]: the jettison lever
    More example sentences
    • One is you can jettison the fuel if the airplane has a jettison system.
    • On board the battle ship Alkaline, Dex moved cautiously to his station near the jettison pods.
    • When the airplane was in a position to jettison the load, the pilot discovered the jettison switch guard had vibrated back to the closed position.


late Middle English (as a noun denoting the throwing of goods overboard to lighten a ship in distress): from Old French getaison, from Latin jactatio(n-), from jactare 'to throw' (see jet1). The verb dates from the mid 19th century.

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