1. sodium hydroxide

noun. A strongly alkaline caustic used in manufacturing soap and paper and aluminum and various sodium compounds.
Synonyms
caustic soda hydrated oxide hydroxide lye

2. sodium-vapour lamp

noun. Lamp in which an electric current passed through a tube of sodium vapor makes a yellow light; used is street lighting.
Synonyms
sodium-vapor lamp lamp

3. sodium-vapor lamp

noun. Lamp in which an electric current passed through a tube of sodium vapor makes a yellow light; used is street lighting.
Synonyms
sodium-vapour lamp lamp

4. hydroxide

noun. (haɪˈdrɑːksaɪd) A compound of an oxide with water.
Synonyms
aluminum hydroxide caustic potash aluminium hydroxide compound slaked lime caustic soda hydrated lime potassium hydroxide sodium hydroxide calcium hydroxide calcium hydrate lime hydrate hydrated aluminium oxide hydrated aluminum oxide potash chemical compound magnesium hydroxide hydrated oxide lime caustic lime
Antonyms
decrease disintegrate take away analyze disassemble

5. hydroxide

noun. (haɪˈdrɑːksaɪd) A chemical compound containing the hydroxyl group.
Synonyms
chemical compound compound
Antonyms
smooth rough simple

6. sodium

noun. (ˈsoʊdiːəm) A silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt).
Synonyms
halite saltwater metal seawater brine Na rock salt atomic number 11 metallic element
Antonyms
fresh water nonmetallic
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