jettison

• n. 貨物を投げ捨てる。
• vt.積み荷を投げ捨てる（難破した場合に積み荷を軽くするために積み荷を投げ捨てる）

中英語のjetteson（投げ飛ばす、水に投げ入れる）から、古フランス語のgetaison（投げ捨てる）から、ラテン語のjactare（投げる、投げつける）から、語源的にはproject（投影する、放出する）と同じ。

jettison

jettison: [15] Etymologically, to jettison something is to ‘throw’ it overboard. Like jet, as in ‘jet engine’, the word comes from Latin jactāre ‘throw’. The abstract noun derived from this was jactātiō, which entered English via Anglo-Norman getteson. It was used for the ‘action of throwing cargo overboard, especially in order to lighten a ship’, but it was not converted to its familiar modern role, as a verb, until as recently as the 19th century. The contracted form jetson, later jetsam, emerged in the 16th century, and later came to be used for such jettisoned material washed ashore.
=> jet, jctsam

jettison (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.

1. All right，Skull Squadron， jettison Synchro Cannon modules immediately.

よし、ドクロ中隊、すぐにシンクロ砲モジュールを捨てて。

2.Should NASA jettison the shuttle and station right away？

nasa宇宙シャトルと宇宙ステーションの計画を今すぐ放棄すべきではないでしょうか。

3.Sometimes you need to jettison unhealthy cargo.

悪い荷物を捨てなければならないことがあります。

4.We jettison an unworkable plan.

実行しにくい計画を破棄します。

5.Repeat, jettison Synchro Cannon modules immediately.

繰り返し、すぐに同期砲モジュールを捨てます。