Micro

"Micro-" is a prefix used in the metric system denoting a factor of one millionth (1/1,000,000 or 10⁻⁶). It is symbolized by the Greek letter μ (mu). This prefix is widely used in various scientific and technical fields to express measurements at a very small scale.

For example:

• One micrometer (μm) is one millionth of a meter.
• One microsecond (μs) is one millionth of a second.
• One microgram (μg) is one millionth of a gram.

The use of "micro-" as a prefix is standardized in the International System of Units (SI) and is crucial for expressing dimensions, times, weights, and other quantities in the microscopic scale.