spirit blue
Definition
- Noun (countable and uncountable):
- A blue dye: "spirit blue" refers to a type of blue dye that is soluble in alcohol (spirit), used especially in microscopy and as a stain for biological specimens.
- The color itself: The specific shade of blue produced by this dye, often described as a deep, vivid blue.
Usage Examples
- (The dye was applied to highlight structures.)
- (The dye works well in alcoholic solutions.)
- (The color of the dye.)
Advanced Usage
- "spirit blue" as a compound noun: In scientific contexts, it is often written as a single term or hyphenated (e.g., spirit-blue), but the standard form is "spirit blue."
- The preparation required a solution of spirit blue in ethanol. (The dye dissolved in alcohol.)
Variants and Related Words
- Spirit (n): a volatile liquid, especially alcohol, used as a solvent.
- The dye dissolves easily in spirit. (The liquid alcohol.)
- Blue (adj/n): the color between green and violet.
- The sky is a clear blue. (The color itself.)
- Spirit-soluble (adj): capable of being dissolved in alcohol.
- Spirit blue is a spirit-soluble dye. (It dissolves in alcohol.)
Synonyms
- Aniline blue: a similar dye used in staining, though not necessarily alcohol-soluble.
- Alcohol blue: a generic term for blue dyes soluble in alcohol.
- Methyl blue: a related dye, sometimes used interchangeably in microscopy.
Related Idioms
Phrasal Verbs