Definition, Meaning & Synonyms
picometre
Noun
pee-koh-MEE-ter
Definition
A picometre is a unit of length in the metric system, equal to one trillionth of a metre (10^-12 metres).
Examples
- The wavelength of certain gamma rays is measured in picometres.
- The size of some atoms and small molecules can be expressed in picometres.
- E.g., the bond length between atoms in a molecule can be around 100 picometres.
Meaning
It is often used in scientific fields to measure very small distances or sizes, particularly in physics and chemistry.
Synonyms
- Trillionth of a metre
- 1e-12 metre
