piston

• n. ピストン
• n. （ピストン）人名；（英?伊）ピストン

古イタリア語のpistone「ピストン」から、ラテン語のpinsere「叩く」「乳棒」、語源は乳棒、雌しべと同じ。

piston

piston: [18] The Latin verb pinsere meant ‘beat, pound’. Its past participial stem pist- formed the basis for the noun pistillum ‘grinding stick, pestle’ (from which English gets pistil ‘female flower part’ [18], an allusion to its shape). This passed into Italian as pestello, from which English gets pestle [14]. From the Italian stem pest- was formed pestone ‘rammer’, whose variant pistone gave French piston – whence English piston.
=> pestle, pistil

piston (n.)

1704, from French piston, from Middle French piston "large pestle," from Old Italian pistone "a piston," variant of pestone "a pestle," from pestare "to pound," from Late Latin pistare, frequentative of Latin pinsere (past participle pistus) "to pound" (see pestle). As a verb from 1930.

1. Let 's get the lathe to turn the new piston .

旋盤車で新しいピストンを[加工]しましょう.

2.They use a piston engine instead.

彼らはピストンエンジンに変更した。

3.Tell the foundry to cast another piston .

鋳鉄間にピストンを再鋳造するように伝える。

4.The piston slides noiselessly up and down.

このピストンは上下に動き、音がしない。

5.The piston moves by steam pressure.

ピストンは蒸気圧下で動く.