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U

U

10 8.0
The symbol for the metal uranium used as nuclear fuel
  • noun
  • /juː/
  • Specialized
translation icon : U (símbolo del uranio)
  • Therefore, there must have been several times more 238 U to start with.
  • 235 U
  • U = 44.5, z
  • U =

Examples

  • The fuel was 235 U borne in thin, curved plates.

    Academic text (2002)
  • The modules use standard 5% enriched U-235 uranium and have a 4.5-year operating cycle between refuelings.

    Blog text (14)
  • - This is accelerated and expelled by a nuclear reactor, enriched largely by the use of a fissible U-235 isotope, giving the necessary thrust to the interplanetary mission.

  • The scientist measured the levels of U in the soil near the nuclear facility to assess contamination.

  • In nuclear chemistry, U is essential as it serves as a fuel for reactors due to its radioactive properties.

  • Before the experiment, they ensured that all U materials were securely stored to prevent accidents.

Synonyms

uranium
vsU
  • Specialized
115 7.3

A heavy radioactive metal used as fuel in power plants and to make nuclear weapons

is the single-letter chemical symbol that stands for the same metal

Idioms

to execute a U-turn
  • Literature
5.3

Change a plan or decision so the opposite happens

Compounds

non-U humor
  • Archaic
9.8

A style of comedy that people see as middle-class or working-class and less formal

A town in the Czech Republic known for the Battle of Austerlitz

8.9

A car you rent and drive yourself for a short time

9.9

A woman who moves in with another woman very soon after they start dating

3.2

A complete turn to go the opposite way, like a car on the road

Surface Forms

U singular

Etymology

U as a chemical symbol comes from the element name uranium, which was named after the planet Uranus, a name that means 'sky'. So remember 'U for Uranus' to help you recall that U is the metal used in nuclear fuel.