micron
/'maikrɔn/
Definition
- 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.
Noun
-
a metric unit of length equal to one millionth of a meter
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