precipitate

• n. [化学]沈殿物
• vt.沈殿させる；寄与させる；激しく投げる；中に突っ込む
• vi. [化学]沈殿させる；激しく落下させる；雨や雪などに凝縮させる。
• adj.突然; 激しく落ちる; 沈殿する

pre（前）、before（前）、-cip（頭）、語源的にはcap（帽子）、captain（船長）、-ate（作る）と同じ。headが前にあっても、headlong、後に気象用語では降水、降雪、ひいては物理用語ではElectrostatic Precipitator、電気集塵装置のようにprecipitate、depositate、accumulate dustで使われる。

preは前に、-cipは頭に、語源的にはcap、captainと同じ、-ateは形容詞の接尾辞。たとえ頭が前にあっても、headlong, 派生 語源 Reckless, hasty.

precipitate (v.)

"to hurl or fling down," 1520s, a back formation from precipitation or else from Latin praecipitatus, past participle of praecipitare "to throw or dive headlong," from praeceps "steep, headlong, headfirst" (see precipice). Meaning "to cause to happen, hurry the beginning of" is recorded from 1620s. Chemical sense is from 1620s; meteorological sense first attested 1863. Related: Precipitated; precipitating.

precipitate (adj.)

c. 1600, from Latin praecipitatus, past participle of praecipitare "to throw or dive headlong" (see precipitate (v.)). Meaning "hasty" is attested from 1650s. Related: Precipitately.

precipitate (n.)

1560s, probably a back formation from precipitation.

1. Adding sulphate to the solution will give a precipitate .

この溶液に硫酸塩を加えると沈殿が発生する.

2.A cool breeeze caused a precipitate drop in the temperature.

冷風により温度が急降下.

3.Clouds usually precipitate as rain or snow.

雲は雨や雪に凝結することが多い。

4.The king was too precipitate in declaring war.

国王は宣戦布告をすることに軽率すぎる。

5.It would only serve to precipitate his ruin.

彼の破滅を加速させるだけだ。