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nouna base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine
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nouna heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons
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adjective(chiefly British) of or appropriate to the upper classes especially in language use
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nounthe 21st letter of the Roman alphabet
Definition that contains u
- i used of a single unit or thing; not two or more
- have undergo
- have undergo (as of injuries and illnesses)
- just used especially of what is legally or ethically right or proper or fitting
- get undergo (as of injuries and illnesses)
- up used up
- one used of a single unit or thing; not two or more
- about used of movement to or among many different places or in no particular direction
- see undergo or live through a difficult experience
- think use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments