英英字典： U
Overview of noun u
The noun u has 3 senses
- uracil, U -- (a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine)
- uranium, U, atomic number 92 -- (a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons)
- U, u -- (the 21st letter of the Roman alphabet)
Overview of adj u
The adj u has 1 sense
- u -- ((chiefly British) of or appropriate to the upper classes especially in language use)
(Sound)
