The pronoun of the second person, in the nominative, dative, and objective case, indicating the person or persons addressed.
a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine
a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
(chiefly British) of or appropriate to the upper classes especially in language use
the 21st letter of the Roman alphabet
