FERMI

Fermi, Enrico Fermi

(noun) Italian nuclear physicist (in the United States after 1939) who worked on artificial radioactivity caused by neutron bombardment and who headed the group that in 1942 produced the first controlled nuclear reaction (1901-1954)

femtometer, femtometre, fermi

(noun) a metric unit of length equal to one quadrillionth of a meter

Source: WordNet® 3.1

Etymology

Noun

fermi (plural fermis)

An obsolete unit of length equal to one femtometer or femtometre (10⁻¹⁵ m).

Proper noun

Fermi

A surname.

The physicist Enrico Fermi.

Source: Wiktionary

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