Толковый словарь английского языка Oxford English Reference - sodium
Sodium
sodium
n. Chem. a soft silver-white reactive metallic element, occurring naturally in soda, salt, etc., that is important in industry and is an essential element in living organisms. Usage Symb.: Na. Phrases and idioms sodium bicarbonate a white soluble powder used in the manufacture of fire extinguishers and effervescent drinks. sodium carbonate a white powder with many commercial applications including the manufacture of soap and glass. sodium chloride a colourless crystalline compound occurring naturally in sea water and halite; common salt. sodium hydroxide a deliquescent compound which is strongly alkaline and used in the manufacture of salt and pepper: also called caustic soda. sodium nitrate a white powdery compound used mainly in the manufacture of fertilizers. sodium-vapour lamp (or sodium lamp) a lamp using an electrical discharge in sodium vapour and giving a yellow light. Derivatives sodic adj. Etymology: SODA + -IUM
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noun Etymology: New Latin, from English soda Date: 1807 a silver-white soft waxy ductile element of the alkali metal group that occurs abundantly in nature in combined form and is very active chemically ...Толковый словарь английского языка
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