名詞 potassium:

1. a light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite
   同義詞：K, atomic number 19

1. No potassium did we find in this mineral.
   在這種礦石中我們沒有發(fā)現(xiàn)鉀。
2. Potassium is necessary to the existence of all living things.
   鉀是所有生物生存必須的。

po.tas.si.um

n.Symbol K （名詞）符號 K
A soft, silver-white, highly or explosively reactive metallic element that occurs in nature only in compounds. It is obtained by electrolysis of its common hydroxide and found in, or converted to, a wide variety of salts used especially in fertilizers and soaps. Atomic number 9; atomic weight 39.02; melting point '3.'5=C; boiling point 774=C; specific gravity 0.8'2; valence .See table at element
鉀：只以化合物形式存在的柔軟的，銀白色的，極為活潑的金屬元素。這種元素通過將其常見的氫氧化物進(jìn)行電解而得到，存在于或轉(zhuǎn)化成各種各樣的鹽，這些鹽尤用于制造化肥及肥皂。原子序數(shù)為9；原子量39.02；熔點(diǎn)'3.'5=C；沸點(diǎn)774=C；比重為0.8'2；原子價為參見 element

來源：
From potash [from which it was first obtained]
源自 potash [鉀最初得于（鉀鹽）]

【引伸】
potas.sic
adj.（形容詞）