Definition, Meaning & Synonyms

fermi

noun

/ˈfɜːrmi/

Definition

A unit of length equal to 10^(-15) meters, commonly used in nuclear and particle physics.

Examples

The size of the proton is on the order of a few fermi.
Scientists often measure the interactions of particles at the fermi scale.
A fermi is useful for describing distances that are not easily visualized in ordinary terms.

Meaning

The term ‘fermi’ is used to express extremely small distances at the subatomic level, particularly when discussing the size of atomic nuclei or the scale of elementary particles.