cudbear

Thân thiện

A scientist carefully applies cudbear dye to a sample of white fabric.

Definition

1. Noun:
   • A purplish dye obtained from orchil lichens: "Cudbear" is a specific type of reddish-purple dye historically extracted from certain species of lichens, primarily of the genera Roccella and Ochrolechia.

Usage Examples

• Noun:
  • The 18th-century textile was colored with cudbear.
  • Cudbear was an important dye before the development of synthetic anilines.

Advanced Usage

• Historical/Technical Context: The term is primarily used in historical, textile, or botanical contexts to refer to this specific natural dye. It is not commonly used in everyday modern English.
  • The recipe for producing cudbear was a closely guarded secret.

Variants and Related Words

• Orchil / Archil (n): Another name for a similar purple dye obtained from the same types of lichens. "Cudbear" is sometimes considered a specific preparation of orchil.
• Litmus (n): A related dye also derived from lichens, used as a pH indicator.

Synonyms

• Orchil: A direct synonym for the dye substance.
• Lichen purple: A descriptive term for the color obtained.

Notes on Meaning

• The word refers exclusively to the dye substance itself. It does not refer to the color in a general sense or to the lichens themselves. The lichens are the source material.

Học thuật

Noun

1. a purplish dye obtained from orchil lichens

Từ đồng nghĩa

• orchil
• archil