Search Dictionary
Definition of calx

calx

/kælks/
calx
Plural:calces
JUMP TO:

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

calliandra
callistephus
calochortus
calx
calylophus
calyx
calzone

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 Oct 14, 2026, from https://wordmom.com/dictionary/calx
Wordmom is your complete guide to the English language. Whether you're looking up a definition, searching for the perfect synonym, or unscrambling letters for a word game, our comprehensive suite of tools is designed to help you find the right word, every time.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWords
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE®, Words With Friends®, Wordle®, and related game titles or tournament codes are registered trademarks of their respective owners (including Hasbro, Mattel, Zynga, The New York Times, NASPA, and WESPA). Wordmom is an independent reference utility for educational and entertainment purposes, not affiliated with, sponsored, or endorsed by these entities. All game names are referenced strictly under nominative fair use for compatibility.