achromic

Thân thiện

The scientist placed the achromic sample under the light for observation.

Definition

1. Adjective:
   • Having no color; colorless: Describes something that lacks any hue or pigmentation. It is often used in scientific or technical contexts, particularly in biology, medicine, and chemistry, to refer to tissues, cells, or substances that are not colored.

Usage Examples

• Adjective:
  • The achromic patches on the leaf indicated a lack of chlorophyll.
  • Under the microscope, the achromic cells were difficult to distinguish from the background.
  • The laboratory sample was achromic, appearing completely clear.

Advanced Usage

• Technical/Medical Context: Used to describe conditions or features where normal coloration is absent.
  • The patient was diagnosed with achromic nevus, a type of birthmark without pigment.
• Scientific Description: Used in biology or chemistry to denote a lack of color in a specimen or solution.
  • The achromic reaction confirmed the absence of the target compound.

Variants and Related Words

• Achromatic (adj): 1. Free from color. 2. In optics, transmitting light without separating it into constituent colors (e.g., an achromatic lens).
• Achromia (n): The condition of being without color, especially the absence of pigment in the skin or hair.
• Achromatize (v): To make achromatic; to remove color.

Synonyms

• Colorless
• Unpigmented
• Hueless
• Pallid (when referring to a pale, weak color that appears nearly absent)

Antonyms

• Chromatic
• Colored
• Pigmented
• Hued

Notes on Usage

• "Achromic" is a specialized term. In everyday language, "colorless" is more common.
• It is primarily an attributive adjective (used before a noun), as in "achromic area," rather than a predicative one.
• Do not confuse with "achromatic," which has a broader usage, including specific meanings in physics and optics.

Học thuật

Adjective

1. having no color

Từ đồng nghĩa

• achromous