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U (Noun)

Meaning 1

The 21st letter of the Roman alphabet.

Classification

Nouns denoting communicative processes and contents.

Synonyms

  • U

Hypernyms

  • Alphabetic Character
  • Letter Of The Alphabet

Meaning 2

A base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine.

Classification

Nouns denoting substances.

Synonyms

  • Uracil

Hypernyms

  • Nucleotide

Meaning 3

A heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons.

Classification

Nouns denoting substances.

Synonyms

  • Atomic Number 92
  • Uranium

Hypernyms

  • Metallic Element

Hyponyms

  • Uranium 235
  • Uranium 238
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