What does decoction mean?
A decoction is a liquid extract prepared by boiling a substance—most commonly plant material such as roots, bark, seeds, or woody stems—in water for an extended period. The sustained heat breaks down tough cell walls and draws out active compounds that gentler methods would leave behind, which is why decoctions are favoured for hardy ingredients while delicate leaves and flowers are usually steeped as infusions instead. The word appears mainly in formal and specialist contexts: herbalism, pharmacology, traditional Chinese and Ayurvedic medicine, and historical accounts of medical practice, where a physician might order a decoction of some specific bark or root. Beyond the liquid itself, decoction can refer to the process of boiling-and-extracting generally. Though uncommon in casual conversation, the term remains current wherever traditional remedies are discussed, and it offers writers a precise, authoritative alternative to vaguer words like 'brew' or 'mixture'.
nounA decoction is a liquid preparation made by boiling a substance, especially plant material, in water in order to extract its medicinal or flavouring properties; the substance so extracted. It also denotes the act or process of extracting in this way.
- A liquid medicine or extract obtained by boiling a substance (especially plant material such as roots, bark, or seeds) in water.
- The act or process of boiling a substance to extract its properties.
"The herbalist prepared a decoction of willow bark to ease the patient's fever."
"She simmered a decoction of ginger root for twenty minutes before straining it into a cup."
"Traditional practitioners often preferred a decoction over an infusion when working with dense, woody plant material."
Standard plural form; used when referring to multiple preparations or instances of the process.
"The medieval manuscript catalogued dozens of decoctions drawn from local herbs."
Before modern pills and tinctures, boiling bark into a 'decoction' was how medicine was made — the word literally means 'boiling down' in Latin.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of decoction
Decoction comes from the Latin verb decoquere, meaning 'to boil down' or 'to cook thoroughly', formed from de- ('down, away') plus coquere ('to cook'), the same root that gives English 'cook' and 'concoct'. The word entered English in the late Middle English period, borrowed via Old French or directly from Latin. It shares its Latin ancestry with related terms such as 'decoct', the verb from which it derives.
How decoction is actually used
Decoction belongs chiefly to formal, technical registers — herbalism, pharmacology, and traditional medicine — rather than everyday speech. It carries no strong connotation beyond this specialist association. In contrast with the more general 'brew' or 'concoction', it specifically implies boiling as the extraction method.
Easily confused with decoction
An infusion involves steeping material (usually leaves or flowers) in hot water without boiling, whereas a decoction requires prolonged boiling, typically for tougher materials like roots, bark, or seeds.