Definition, Meaning & Synonyms
atto
prefix
ˈæt.oʊ
Definition
A metric prefix used in the International System of Units (SI) that represents a factor of 10-18.
Examples
- The mass of a single proton is about 1.67 attograms.
- In quantum physics, the behavior of particles can be observed in the attosecond regime.
- The energy levels of certain atoms can be measured in atto electron volts.
Meaning
The term ‘atto’ denotes one quintillionth of a unit, symbolized as ‘a’. It is commonly used in scientific measurements to convey extremely small quantities.
Synonyms
- none (specific to a metric prefix)
