Micro- Definition (Illustrated Mathematics Dictionary) - Math Is Fun

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Math is Fun ABCDEFGHIJKLMNOPQRSTUVWXYZ Definition of Micro- more ... Micro-

A prefix meaning one-millionth (1/1,000,000 or 10-6)

Examples: • a micrometer is one-millionth of a meter, which is about the size of a small bacterium! • a microsecond is one-millionth of a second

Symbol is µ

Example: 12 µm = 12 micrometers = 12 millionths of a meter (0.000012 m)

Micro- See: Metric System, Milli-, Mega- Metric Numbers Copyright © 2025 Rod Pierce

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