Definition

A unit of length equal to one billionth of a meter.

Example

The width of a human hair is about 80,000 to 100,000 nanometers.

Conversation

Did you know that a nanometer is one billionth of a meter?

Really? That's so tiny!

Yeah, it's used to measure things at the atomic level.

Wow, I had no idea that things could be measured so small!

Synonyms & Antonyms

Root Explanation

Nanometer → It is formed from "nano-" (from Greek "nanos", meaning dwarf or very small) and "meter" (from Greek "metron", meaning measure). The word "nanometer" refers to a unit of measure that is one billionth of a meter, indicating an extremely small scale.

Memory Tip

Think of 'nano-' meaning very small, and 'meter' meaning measure. This helps you remember that a nanometer is a measure of something very tiny.

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