## picometre

**Picometre** is a subdivision of the

**metre** unit. The

**pico** prefix stands for 1E-12 therefore, 1 picometre = 1E-12 metre units.

**Metre** is a unit of measurement of length. The definition for metre is the following:

1 picometre is equal to one trillionth (^{1}/_{1,000,000,000,000}) of a meter

The symbol for picometre is

**pm**## nanometer

**Nanometer** is a subdivision of the

**meter** unit. The

**nano** prefix stands for 1E-09 therefore, 1 nanometer = 1E-09 meter units.

**Meter** is a unit of measurement of length. The definition for meter is the following:

1 nanometer is equal to 1.0 × 10^{-9} meters

The symbol for nanometer is

**nm**