Synonyms of the word 
CALCAREOUS → CARBONATE - CHALKY
calcareous
- adj. Resembling or containing calcium carbonate or limestone; chalky.
carbonate
- n. Any salt or ester of carbonic acid.
- v. (transitive) To charge (often a beverage) with carbon dioxide.
chalky
- adj. Consisting of or containing chalk.
- adj. Resembling chalk in any way.
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