Jettisoning



[jet-uh-suh n, -zuh n] /ˈdʒɛt ə sən, -zən/

verb (used with object)
1.
to cast (goods) overboard in order to lighten a vessel or aircraft or to improve its stability in an emergency.
2.
to throw off (something) as an obstacle or burden; discard.
3.
Cards. to discard (an unwanted card or cards).
noun
4.
the act of casting goods from a vessel or aircraft to lighten or stabilize it.
5.
.
/ˈdʒɛtɪsən; -zən/
verb (transitive) -sons, -soning, -soned
1.
to throw away; abandon: to jettison old clothes
2.
to throw overboard
noun
3.
another word for jetsam (sense 1)
v.

1848, from jettison (n.) “act of throwing overboard” to lighten a ship. This noun was an 18c. Marine Insurance writers’ restoration of the earlier form and original sense of the 15c. word that had become jetsam, probably because jetsam had taken on a sense of “things cast overboard” and an unambiguous word was needed for “act of throwing overboard.”

Middle English jetteson (n.) “act of throwing overboard” is from Anglo-French getteson, from Old French getaison “act of throwing (goods overboard),” especially to lighten a ship in distress, from Late Latin iactionem (nominative iactatio) “act of throwing,” noun of action from past participle stem of iectare “toss about” (see jet (v.)). Related: Jettisoned.

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