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 (fûr′mē, fĕr′-)
n. pl. fer·mis
A unit of length equal to one femtometer (10-15 meter).

[After Enrico Fermi.]


(ˈfɜːmɪ; Italian ˈfɛrmi)
(Biography) Enrico (enˈriːko). 1901-54, Italian nuclear physicist, in the US from 1939. He was awarded a Nobel prize for physics in 1938 for his work on radioactive substances and nuclear bombardment and headed the group that produced the first controlled nuclear reaction (1942)


(Nuclear Physics) a unit of length used in nuclear physics equal to 10–15 metre
[C20: named after Enrico Fermi]


(ˈfɜr mi, ˈfɛər-)

a unit of length, 10−15 m, used in measuring nuclear distances. Symbol: F
[after E. Fermi]


(ˈfɜr mi, ˈfɛər-)

Enrico, 1901–54, Italian physicist, in the U.S. after 1939.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.fermi - a metric unit of length equal to one quadrillionth of a meter
metric linear unit - a linear unit of distance in metric terms
micromicron, picometer, picometre - a metric unit of length equal to one trillionth of a meter
2.Fermi - 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)
References in periodicals archive ?
In 2010, on their quest to prove the WMAP haze existed, Dobler, Finkbeiner, and their colleagues turned to another space observatory, NASA's Fermi Gamma-ray Space Telescope.
It may even be possible to find other gravitational lenses with data from the Fermi Gamma-ray Space Telescope.
Paul Hertz, director of NASA's astrophysics division in Washington, said that as Fermi opens its second act, both the spacecraft and its instruments remain in top-notch condition and the mission is delivering outstanding science.
Fermi detects gamma rays, the most powerful form of light, with energies thousands to billions of times greater than the visible spectrum.
It's also one of the most complex places to search, because the core is riddled with a variety of ordinary but poorly understood sources of gamma rays, notes Fermi scientist Steve Ritz of the University of California, Santa Cruz.
The Quadro 4000 promises 5x faster performance with Fermi than the previous generation, and with its Scalable Geometry Engine, it can process up to 890 million triangles per second.
L-3 MAPPS has been fortunate to be working as a partner on the Fermi simulator since 2003, said Michael Chatlani, vice president of marketing & sales for L-3 MAPPS Power Systems and Simulation.
Before Fermi was launched, astronomers had expected to find a lot more gamma-ray binaries than they did.
The new catalogue, posted on the Arxiv server, lists the sources of the highest-energy gamma rays that Fermi has yet seen: 514 of them.
On March 3rd, NASA's Fermi Gamma-ray Space Telescope spotted a flare from the Crab Nebula (M1) that's three times greater than its average gamma-ray output.
Summary: TEHRAN (FNA)- A new study using observations from NASA's Fermi Gamma-ray Space Telescope revealed the first clear-cut evidence the expanding debris of exploded stars produces some of the fastest-moving matter in the universe.