jettison

英 ['d?et?s(?)n; -z(?)n] 美['d??t?sn]

GRE低頻詞暢通詞匯

第三人稱單數(shù):?jettisons;過(guò)去式:?jettisoned;過(guò)去分詞:?jettisoned;現(xiàn)在分詞:?jettisoning;

jettison 拋棄，丟棄

來(lái)自中古英語(yǔ)jetteson,拋棄，拋入水中，來(lái)自古法語(yǔ)getaison,拋棄，來(lái)自拉丁語(yǔ)jactare,來(lái)自jacere,扔，投擲，詞源同project,eject.-aison,名詞后綴，詞源同-tion,action.

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 ‘a(chǎn)ction 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.: 好吧, 骷髏中隊(duì), 立刻拋棄同步炮模塊.

2. Should NASA jettison the shuttle and station right away?: nasa是否現(xiàn)在就該放棄太空梭與太空站的計(jì)畫(huà) 呢 ?