Longman Dictionary of Contemporary English homepage

Date: 1400-1500
Language: Anglo-French
Origin: getteson, from Old French getaison 'act of throwing', from getter; JET2

jettison

verb
     
jet‧ti‧son [transitive]
1 to get rid of something or decide not to do something any longer:
The scheme was jettisoned when the government found it too costly.
2 to throw things away, especially from a moving plane or ship

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