Phrase guide

calcium 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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No pronunciation record was provided for this word.

1

noun

Meaning 1

A soft, white powder, Ca(OH)2, obtained by the action of water on calcium oxide.

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: slaked lime, cal

Antonyms: none provided

2

noun

Meaning 2

a caustic substance produced by heating limestone

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: lime, slaked lime, hydrated lime, calcium hydrate, caustic lime, lime hydrate

Antonyms: none provided

Broader terms: hydroxide, hydrated oxide

History

Etymology

No etymology was provided for this word.

Across languages

Translations

33 source translations are retained for this English entry.

  • Assamese: চূণ (sun) — chemical compound
  • Catalan: hidròxid de calci — chemical compound
  • Catalan: calç morta — chemical compound
  • Catalan: calç apagada — chemical compound
  • Chinese Mandarin: 氫氧化鈣 /氢氧化钙 (qīngyǎnghuàgài) — chemical compound
  • Czech: hydroxid vápenatý — chemical compound
  • Dutch: calciumhydroxide — chemical compound
  • Dutch: gebluste kalk — chemical compound
  • Esperanto: kalcia hidroksido — chemical compound
  • Finnish: sammutettu kalkki — chemical compound
  • Finnish: kalsiumhydroksidi — chemical compound
  • French: chaux éteinte — chemical compound
  • German: Calciumhydroxid — chemical compound
  • German: Löschkalk — chemical compound
  • German: Kalkhydrat — chemical compound
  • German: Weißkalkhydrat — chemical compound
  • German: Sumpfkalk — chemical compound
  • Greek: υδροξείδιο του ασβεστίου (ydroxeídio tou asvestíou) — chemical compound
  • Hungarian: kalcium-hidroxid — chemical compound
  • Icelandic: kalsíumhýdroxíð — chemical compound
  • Italian: calce spenta — chemical compound
  • Japanese: 水酸化カルシウム (suisanka karushiumu) — chemical compound
  • Korean: 수산화 칼슘 (susanhwa kalsyum) — chemical compound
  • Malayalam: ചുണ്ണാമ്പ് (cuṇṇāmpŭ) — chemical compound
  • Malayalam: കാൽസ്യം ഹൈഡ്രോക്സൈഡ് (kālsyaṁ haiḍrōksaiḍŭ) — chemical compound
  • Māori: konupūmā waihā — chemical compound
  • Polish: wodorotlenek wapnia — chemical compound
  • Portuguese: hidróxido de cálcio — chemical compound
  • Romanian: var stins — chemical compound
  • Spanish: hidróxido de calcio — chemical compound
  • Turkish: kalsiyum hidroksit — chemical compound
  • Turkish: sönmüş kireç — chemical compound
  • Turkish: kireç sütü — chemical compound