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Chalco- is a combining form used like a prefix meaning “copper.” It is occasionally used in scientific terms, especially in mineralogy.

Chalco- comes from Greek ���󲹱���ó��, meaning “copper.” The Latin equivalent is cupr-, “copper.” Want to know more? Check out our �y��vlogs That Use article on cupr-.

What are variants of chalco-?

When combined with words or word elements that begin with a vowel, chalco- becomes chalc-, as in chalcosis.

An example of a technical term that features the form chalco- is chalcography, “the art of engraving on copper or brass.”

While chalco- means “copper,” -graphy refers to “a process or form of writing or drawing,” from Greek -graphia. Chalcography literally means “copper writing.”

What are some words that use the combining form chalco-?

• chalcocite
• chalcogen
• chalcogenide
• chalcolite
• chalcopyrite
• chalcotrichite (using the equivalent form of chalco- in German)

What are some other forms that chalco- may be commonly confused with?

• chlor-
• chloro-
• chondr-
• chondro-

The combining form -lite is used to name minerals. With this in mind, what kind of substance is chalcolite?