fermi

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

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

Named after Italian physicist Enrico Fermi.

Bixio himself led his men, and with his aides-de-camp, Cavaliere Filippo Fermi, Count Martini, and Colonel Malenchini, all Tuscans, actually charged the enemy. — Complete Short Works of George Meredith, George Meredith

femtometer, femtometre

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