Phrase guide

caustic soda

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

sodium hydroxide (NaOH), a strong alkaline substance used in the manufacture of paint, soap and detergents, or as a drain cleaner.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

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: sodium hydroxide

Antonyms: none provided

Broader terms: hydroxide, hydrated oxide, lye

History

Etymology

No etymology was provided for this word.

Across languages

Translations

40 source translations are retained for this English entry.

  • Bulgarian: натриева основа (natrieva osnova) — sodium hydroxide
  • Catalan: sosa càustica — sodium hydroxide
  • Chinese: 燒鹼 /烧碱 (shāojiǎn) — sodium hydroxide
  • Chinese: 苛性鈉 /苛性钠 (kēxìngnà) — sodium hydroxide
  • Czech: louh sodný — sodium hydroxide
  • Danish: kaustisk soda — sodium hydroxide
  • Danish: ætsnatron — sodium hydroxide
  • Finnish: lipeä — sodium hydroxide
  • Finnish: natriumhydroksidi — sodium hydroxide
  • French: soude caustique — sodium hydroxide
  • German: Ätznatron — sodium hydroxide
  • German: kaustisches Soda — sodium hydroxide
  • Greek: καυστική σόδα (kafstikí sóda) — sodium hydroxide
  • Hungarian: marólúg — sodium hydroxide
  • Hungarian: marószóda — sodium hydroxide
  • Japanese: 苛性ソーダ (kaseisōda) — sodium hydroxide
  • Korean: 가성소다 (gaseongsoda) — sodium hydroxide
  • Norwegian Bokmål: kaustisk soda — sodium hydroxide
  • Norwegian Bokmål: natriumhydroksid — sodium hydroxide
  • Norwegian Bokmål: natronlut — sodium hydroxide
  • Norwegian Nynorsk: kaustisk soda — sodium hydroxide
  • Norwegian Nynorsk: natriumhydroksid — sodium hydroxide
  • Norwegian Nynorsk: natronlut — sodium hydroxide
  • Persian: سود سوزآور (sud-e suz-âvar) — sodium hydroxide
  • Polish: soda żrąca — sodium hydroxide
  • Polish: soda kaustyczna — sodium hydroxide
  • Portuguese: soda cáustica — sodium hydroxide
  • Romanian: sodă caustică — sodium hydroxide
  • Romanian: hidroxid de sodiu — sodium hydroxide
  • Russian: каусти́ческая со́да (kaustíčeskaja sóda) — sodium hydroxide
  • Slovak: žieravý lúh — sodium hydroxide
  • Spanish: soda cáustica — sodium hydroxide
  • Thai: โซดาไฟ (soo-daa-fai) — sodium hydroxide
  • Thai: โซดาแผดเผา — sodium hydroxide
  • Thai: คอสติกโซดา — sodium hydroxide
  • Ukrainian: каусти́чна со́да (kaustýčna sóda) — sodium hydroxide
  • Ukrainian: кавсти́чна со́да (kavstýčna sóda) — sodium hydroxide
  • Мongolian: идэмхий натри (idemxii natri) — sodium hydroxide
  • Мongolian: натрийн шүлт (natriin šült) — sodium hydroxide
  • Мongolian: каустик сод (kaustik sod) — sodium hydroxide