Definition

1. Adjective:
   • Not readily colored by stains: Describes the substance of a cell nucleus that does not absorb or retain biological dyes (stains) easily, making it appear less distinct under a microscope.

Usage

• This is a specialized scientific term used primarily in cell biology and cytology to describe the physical properties of nuclear material.
• It is typically used attributively (before a noun) to modify terms like "region," "area," or "substance."

Examples

• Adjective:
  • The achromatinic regions of the nucleus are difficult to observe with standard staining techniques.
  • Under the microscope, the achromatinic material appeared clear and unstained.

Advanced Usage

• Comparative and Superlative Forms: "more achromatinic," "most achromatinic." These forms are rarely used but are grammatically possible for making comparisons.
  • This sample is more achromatinic than the one we examined yesterday.

Variants and Related Words

• Achromatin (noun): The part of the cell nucleus that is achromatinic; the substance that stains poorly.
  • The achromatin was not visible in the prepared slide.
• Chromatinic (adjective): Readily colored by stains; the antonym of achromatinic.
  • The chromatinic regions were deeply colored by the dye.

Synonyms

• Non-staining: Not taking up stain.
• Stain-resistant: Resistant to being colored by dyes (in a biological context).

Antonyms

• Chromatinic: Readily colored by stains.
• Stainable: Capable of being stained.

Adjective

1. (of substance of a cell nucleus) not readily colored by stains