quassia

/'kwɔʃə/
Học thuật
Thân thiện
quassia

A gardener plants a young quassia shrub in a botanical garden.

Definition
  1. Noun:
    • A type of tree or shrub: A handsome South American shrub or small tree (Quassia amara) known for its bright scarlet flowers and fine-grained yellowish wood.
    • A medicinal substance: A very bitter drug, insecticide, tonic, or vermifuge extracted from the wood and bark of trees from the genera Quassia and Picrasma.
Usage Examples
  • Noun (Referring to the plant):

    • The quassia in the botanical garden is flowering beautifully.
    • The wood of the quassia is valued for its fine grain and color.
  • Noun (Referring to the extract):

    • The pharmacist prepared a tincture of quassia as a digestive tonic.
    • In organic gardening, a quassia spray is sometimes used to control aphids.
Advanced Usage
  • "Quassia chips": Dried chips of quassia wood, often used to make infusions or decoctions.
    • She steeped quassia chips in hot water to make a bitter medicinal tea.
Variants and Related Words
  • Quassia amara (n): The scientific name for the specific species of quassia tree native to South America.
  • Quassin (n): The primary bitter compound (a lactone) isolated from quassia wood, responsible for its medicinal properties.
Synonyms
  • Bitterwood: A common name for trees of the genus , referring to the intense bitterness of the wood and extract.
  • Picrasma: A related genus of trees (e.g., ) whose bark also yields a similar bitter extract sometimes called quassia.
Related Phrases and Compounds
  • Quassia cup: A cup made from quassia wood, historically believed to impart its bitter properties to liquids stored in it, used as a tonic.
    • He drank his water from an old quassia cup for its supposed health benefits.
  • Quassia infusion: A liquid preparation made by soaking quassia wood or chips in water.
    • A quassia infusion can be applied topically to treat head lice.
quassia

A gardener plants a young quassia shrub in a botanical garden.

Noun
  1. handsome South American shrub or small tree having bright scarlet flowers and yielding a valuable fine-grained yellowish wood; yields the bitter drug quassia from its wood and bark
  2. a bitter compound used as an insecticide and tonic and vermifuge; extracted from the wood and bark of trees of the genera Quassia and Picrasma