What does calcine mean?
Calcine is a technical verb meaning to heat a solid material to a high temperature below its melting point so that volatile components are driven off and the substance is chemically transformed. In practice it usually involves roasting ores, limestone, gypsum, or similar minerals in air: limestone, for example, is calcined to yield quicklime, releasing carbon dioxide in the process. The word belongs mainly to the vocabulary of chemistry, metallurgy, cement manufacture, and geology, where calcination is a fundamental step in processing raw materials. It carries no emotional connotation; its value lies in precision, marking a specific kind of thermal treatment distinct from simple burning or melting. Derived forms include calcination (the process itself) and the rarer agent noun calciner. Though unfamiliar to most lay readers, calcine remains indispensable wherever scientists and engineers describe how heat converts stone and ore into useful substances.
To heat a substance, especially an ore or mineral, to a temperature below its melting point in order to drive off volatile matter or bring about chemical decomposition.
"The plant calcines limestone continuously to supply the cement works."
Chiefly used in chemistry, metallurgy, and industrial contexts.
The product or residue resulting from calcining; a substance that has been subjected to calcination.
"The chemist weighed the white calcine left after heating."
This nominal use is rare and largely historical; the verb sense dominates.
As a noun, calcine takes the regular plural -s, though both the noun and its plural are uncommon outside historical or specialized chemical writing.
"The assay report listed the weights of several calcines from the previous week."
Every piece of quicklime and Portland cement on Earth exists because someone first had to 'calcine' limestone at over 800 °C.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of calcine
Calcine derives from French calciner, which came from Medieval Latin calcinare, ultimately rooted in Latin calx, meaning limestone or lime. It entered English in the late sixteenth or early seventeenth century alongside the growth of alchemy and early chemistry. The same Latin root calx gives English a family of related words including calcium, calcify, calcite, and calculus.
Related word forms
How calcine is actually used
A technical term used chiefly in chemistry, metallurgy, geology, and materials science; rare in everyday speech. The stress falls on the second syllable in standard British and American usage.
Easily confused with calcine
To calcify is to harden by deposition of calcium salts (as in bone or coral), whereas to calcine is to decompose a material by intense dry heating.