noun.
The act of boiling in water, in order to extract the peculiar properties or virtues.
noun.
The liquor in which an animal or a vegetable substance has been boiled; water impregnated by boiling with the properties of such a substance: as, a decoction of Peruvian bark.
the GNU version of the Collaborative International Dictionary of English
noun.
The act or process of boiling anything in a watery fluid to extract its virtues.
noun.
An extract got from a body by boiling it in water.
noun.
an extraction or essence of something, obtained by boiling it down
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
(pharmacology) the extraction of water-soluble drug substances by boiling
Word Usage
"The explanation rests in the form in which they consume their coffee, namely the decoction, which is free from the sedative principle of the seed, that undoubtedly resides in the aromatic ingredient "cafeol.""