micron

/'maikrɔn/

Thân thiện

A scientist measures a cell that is 50 microns wide.

Definition

1. Noun:
   • A metric unit of length equal to one millionth of a meter: A "micron" is a precise measurement used in scientific and technical fields to denote an extremely small distance. It is equivalent to 1/1,000,000 of a meter or 1/1,000 of a millimeter.

Usage and Examples

• Noun:
  • A human hair is approximately 70 microns in diameter.
  • The filter can remove particles larger than 5 microns.
  • The wavelength of infrared light is measured in microns.

Advanced Usage

• "Micron-level": Used as an adjective to describe precision or scale at the level of microns.
  • Micron-level accuracy is required for manufacturing computer chips.

Variants and Related Words

• Micrometer (µm): The official SI (International System of Units) symbol for micron. The terms are often used interchangeably in many contexts.
  • The gap is 10 micrometers (µm) wide.
• Micrometry: The science or practice of measuring with a micrometer.
• Sub-micron: Refers to dimensions smaller than one micron.
  • Sub-micron particles are difficult to filter.

Synonyms

• Micrometer: (In the context of the unit of length, not the measuring tool) The formal term for the same unit.
• One-millionth of a meter: A descriptive synonym.

Notes on Meaning

• The word "micron" is a specific scientific term. It is not typically used in everyday conversation but is common in engineering, physics, biology, and materials science.
• It is important to distinguish the unit "micron" (µm) from the measuring tool called a "micrometer," which is used to take precise measurements, often in microns.

Học thuật

Noun

1. a metric unit of length equal to one millionth of a meter

Từ đồng nghĩa

• micrometer