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Definition of calx

calx

/kælks/
calx
Plural:calces
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calx Lexical Profile

calx Game Scores & Validity

• noun

1

The powdery, friable substance that remains after a metal or mineral has been subjected to high heat, roasting, or calcination; historically synonymous with a metallic oxide in early chemistry and alchemy.

Example

"After hours of intense heating in the furnace, the raw ore was reduced to a white, chalky calx."

2

The heel of the foot, or the prominent bone of the heel known as the calcaneus.

Example

"The Achilles tendon attaches securely to the posterior surface of the calx, allowing for powerful plantar flexion of the foot."

Synonyms
View all synonyms for calx

• Rhymes for calx

• Nearby Words

calvados
calvary
calve
calx
calylophus
calypso
calyx

Word Origin & Etymology

From Latin 'calx' meaning 'limestone, chalk' (the source of the chemical sense) and a homonymous Latin 'calx' meaning 'heel' (the source of the anatomical sense).

Cite this Entry

Wordmom. (2026). Definition of Calx. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/calx
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