Phrase guide

sodium hydroxide

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

A strong, caustic alkali (NaOH) used in the manufacture of soap, detergents, paper, textiles and having many other industrial applications.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: chemistry, inorganic-chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a strongly alkaline caustic used in manufacturing soap and paper and aluminum and various sodium compounds

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: caustic soda

Antonyms: none provided

Broader terms: hydroxide, hydrated oxide, lye

History

Etymology

No etymology was provided for this word.

Across languages

Translations

46 source translations are retained for this English entry.

  • Bengali: সোডিয়াম হাইড্রোক্সাইড (śōḍiẏam haiḍrōkśaiḍ) — caustic alkali
  • Catalan: hidròxid de sodi — caustic alkali
  • Catalan: sosa càustica — caustic alkali
  • Chinese Mandarin: 氫氧化鈉 /氢氧化钠 (qīngyǎnghuà nà) — caustic alkali
  • Czech: hydroxid sodný — caustic alkali
  • Finnish: natriumhydroksidi — caustic alkali
  • Finnish: lipeä — caustic alkali
  • French: hydroxyde de sodium — caustic alkali
  • Georgian: ნატრიუმის ჰიდროქსიდი (naṭriumis hidroksidi) — caustic alkali
  • German: Natriumhydroxid — caustic alkali
  • Greek: υδροξείδιο νατρίου (ydroxeídio natríou) — caustic alkali
  • Hungarian: nátrium-hidroxid — caustic alkali
  • Hungarian: marónátron — caustic alkali
  • Hungarian: nátronlúg — caustic alkali
  • Hungarian: lúgkő — caustic alkali
  • Hungarian: lúg — caustic alkali
  • Icelandic: natríumhýdroxíð — caustic alkali
  • Indonesian: natrium hidroksida — caustic alkali
  • Indonesian: soda kaustik — caustic alkali
  • Irish: hiodrocsaíd sóidiam — caustic alkali
  • Italian: idrossido di sodio — caustic alkali
  • Japanese: 水酸化ナトリウム (suisanka natoriumu) — caustic alkali
  • Malay: natrium hidroksida — caustic alkali
  • Malay: soda kaustik — caustic alkali
  • Māori: konutai waihā — caustic alkali
  • Norwegian Bokmål: natriumhydroksid — caustic alkali
  • Norwegian Bokmål: kaustisk soda — caustic alkali
  • Norwegian Bokmål: natronlut — caustic alkali
  • Norwegian Nynorsk: natriumhydroksid — caustic alkali
  • Norwegian Nynorsk: kaustisk soda — caustic alkali
  • Norwegian Nynorsk: natronlut — caustic alkali
  • Persian: سدیم هیدروکسید (sodiyom hidroksid) — caustic alkali
  • Persian: سود (sud) — caustic alkali
  • Polish: wodorotlenek sodu — caustic alkali
  • Portuguese: hidróxido de sódio — caustic alkali
  • Romanian: hidroxid de sodiu — caustic alkali
  • Russian: гидрокси́д на́трия (gidroksíd nátrija) — caustic alkali
  • Russian: е́дкий натр (jédkij natr) — caustic alkali
  • Spanish: hidróxido de sodio — caustic alkali
  • Spanish: hidróxido sódico — caustic alkali
  • Swedish: natriumhydroxid — caustic alkali
  • Tagalog: sodyum haydroksad — caustic alkali
  • Thai: โซเดียมไฮดรอกไซด์ — caustic alkali
  • Thai: โซดาไฟ (so-da-fai) — caustic alkali
  • Turkish: sodyum hidroksit — caustic alkali
  • Vietnamese: natri hiđroxit — caustic alkali