Definition

Noun: A type of synthetic dye in which the colored component (chromophore) is part of a positively charged ion (cation). These dyes are typically used to color materials with a negative surface charge, such as acrylic fibers, paper, and certain biological specimens.

Usage

"Basic dye" is a technical term used primarily in chemistry, textile manufacturing, and biological staining. It is a countable noun.

Examples

• The microbiologist used a basic dye like methylene blue to stain the negatively charged bacterial cells for clearer viewing under the microscope.
• In the lab, we compared the bonding properties of an acid dye and a basic dye on different fabric samples.
• The vibrant color of that acrylic yarn is achieved with a basic dye.

Advanced Usage

• Basic dyes are also known as cationic dyes due to their positive charge.
• In histology, basic dyes are attracted to and stain acidic cellular components, such as nucleic acids (DNA and RNA), a property called basophilia.

Variants and Related Words

• Cationic dye: A direct synonym for "basic dye," emphasizing the positive ionic charge.
• Basic dyeing: (noun) The process or technique of applying basic dyes.

Synonyms

• Cationic dye

Antonyms

• Acid dye (a dye where the chromophore is part of a negatively charged ion, or anion)

Noun

1. a dye that is considered to be a base because the chromophore is part of a positive ion