Etymograph

English

crucible

Crucible comes from Latin crucibulum ‘night-lamp, metallurgic melting-pot’, from crux ‘cross’, and perhaps ultimately from Proto-Italic *kruks.

  1. Proto-Italicc. 1500–700 BCE*kruks1uncertain
  2. Latinc. 75 BCE–200 CEcrux2‘cross’uncertain
  3. Latinc. 75 BCE–200 CEcrucibulum2‘night-lamp, metallurgic melting-pot’apparently derivative of crux
  4. Englishearliest quotation 1837crucible2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin crux, which cites Pokorny
  2. 2 Wiktionary, English crucible
  3. Earliest quotation in Wiktionary’s entry: 1837, Letitia Elizabeth Landon, A First Night: “But, in considering an author and his works as…”.

Lineage

  1. Proto-Italicc. 1500–700 BCE*kruksWiktionary, Latin crux, which cites Pokornyuncertain
  2. Latinc. 75 BCE–200 CEcruxWiktionary, English crucible‘cross’uncertain
  3. Latinc. 75 BCE–200 CEcrucibulumWiktionary, English crucible‘night-lamp, metallurgic melting-pot’apparently derivative of crux
  4. Englishearliest quotation 1837crucibleWiktionary, English crucible. Earliest quotation in Wiktionary’s entry: 1837, Letitia Elizabeth Landon, A First Night: “But, in considering an author and his works as…”

Linked words

through Latin crux ‘cross’

across, cross, cruise, crusade, crouch, crux, excruciating, 8 more

Today it means

noun A cup-shaped piece of laboratory equipment used to contain chemical compounds when heating them to very high temperatures.

Sources

Sources: Wiktionary, “crucible”; the older steps come from the Wiktionary entry for Latin crux. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Italic *kruks / crucible

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