Decaffeination means the process of removing caffeine from something, usually from coffee beans or tea leaves, so that they have less or no caffeine in them.
Other decaffeination processes use chemical solvents to remove caffeine from the green coffee beans; our process is 100 % natural and maintains the unique flavor profile of Kona coffee. (mountainthunder.com)
«The third approach, supercritical carbon dioxide decaffeination, is very similar to the direct solvent methods, except that in this case the solvent is carbon dioxide. (scientificamerican.com)