1. plural of calcination; the process of heating a substance to high temperature until it is reduced to ash or powder, or until a chemical change occurs.
Usage: commonly used in chemistry, metallurgy, and materials science
2. in alchemy and historical chemistry, the reduction of matter to its essential or purified form through intense heat.
Usage: archaic or specialized historical usage

Examples

• The calcinations of limestone at high temperatures produce quicklime.
• Multiple calcinations were required to fully decompose the mineral sample.
• Industrial calcinations of ore help extract valuable metals.
• The chemist studied the calcinations process to understand thermal decomposition.
• Repeated calcinations improved the purity of the ceramic material.
• Ancient alchemists believed calcinations were essential steps in transmutation.