Englishfor English speakers
fermi
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noun
(= femtometer)
a metric unit of length equal to one quadrillionth of a meter
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)
Dirac
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noun
English theoretical physicist who applied relativity theory to quantum mechanics and predicted the existence of antimatter and the positron (1902-1984)
gas
Noun
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A gas is a substance, such as air, that is not liquid or solid.
The sun is a giant ball of gas.
The carbon dioxide gas in Coke and other soft drinks gives them their bubbles.
The workers appear to have been killed by a poisonous gas.
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Gas is a substance such as methane, ethane, propane, or butane that is burned for heat or to make electricity.
Our house has gas-fired central heating.
In the winter, we pay more for gas and electricity.
Alberta's economy is based largely on oil and gas.
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In North America, gas is short for gasoline, a liquid that is used by cars.
A small car like mine holds about 40 litres of gas.
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In North America, the gas is the gas pedal (accelerator) in a car or truck.
We're in a hurry, so hit the gas.
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In North America, if you have gas, you have the need to fart or burp a lot.
gas
Verb
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If you gas a person or animal, you poison it or put it to sleep with gas.
The mice were gassed and then cut open to examine any changes.
My friend was gassed at the dentist before getting his tooth pulled.
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If you gas up a vehicle, you put fuel in it.
As soon as the planes land, we gas them up and they're ready to go again.