jettison

动词 jettison:

1. throw away, of something encumbering
2. throw as from an airplane

1. A ship jettisoning wastes; a pilot jettisoning aircraft fuel.
   一艘正在丢弃废物的船; 一个正在抛弃飞机燃料的飞行员
2. The first-stage vehicle is used to launch the rocket and is then jettisoned in the upper atmosphere.
   第一级运载火箭是用来发射火箭的，进入高层大气後即抛掉。

jet.ti.son

v.tr.（及物动词）
jet.ti.soned,jet.ti.son.ing,jet.ti.sons
To cast overboard or off:
抛弃或丢弃：
例句：
a ship jettisoning wastes; a pilot jettisoning aircraft fuel.
一艘正在丢弃废物的船；一个正在抛弃飞机燃料的飞行员

Informal To discard (something) as unwanted or burdensome:
【非正式用语】 扔掉：丢弃一些不想要或是累赘的东西：
例句：
jettisoned the whole marketing plan.
放弃全部的营销计划

n.（名词）
The act of discarding or casting overboard.
抛弃或扔入水中
Jetsam.
被抛弃的东西

来源：
From Middle English jetteson [a throwing overboard of goods to lighten ship]
源自 中古英语 jetteson [把货物扔入水中以减轻船的重量]
from Anglo-Norman getteson
源自 英法语 getteson
from Vulgar Latin *iect3tiô iect3tiôn-
源自 俗拉丁语 *iect3tiô iect3tiôn-
from *iect3tus [past participle of] .iect3re [to throw] * see jet 2
源自 *iect3tus [] ·iect3re的过去分词 [扔] *参见 jet2