Standard Lemma guide

calx

noun · 3 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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  • /kælks/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • rhymes with -ælks

1

noun

Meaning 1

The substance which remains after a metal or mineral has been thoroughly burnt, once seen as being the essential substance left after the expulsion of phlogiston, but now recognised as being the metallic oxide (or, in some cases, the metal in a state of sublimation).

Definition source: English Wiktionary via Wiktextract

Usage: historical

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

In the Eton College wall game, an area at the end of the field where a shy can be scored by lifting the ball against the wall with one's foot.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

a white crystalline oxide used in the production of calcium hydroxide

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: calcium oxide, quicklime, lime, calcined lime, fluxing lime, unslaked lime, burnt lime

Antonyms: none provided

Broader terms: oxide

History

Etymology

From Latin calx (“lime”). Doublet of cauk and chalk.

Across languages

Translations

3 source translations are retained for this English entry.

  • Bulgarian: окалина (okalina) — substance which remains after a metal or mineral has been thoroughly burnt
  • Polish: popiół — substance which remains after a metal or mineral has been thoroughly burnt
  • Telugu: భస్మము (bhasmamu) — substance which remains after a metal or mineral has been thoroughly burnt