uracil /ura·cil/ (ūr´ah-sil) a pyrimidine base, in animal cells usually occurring condensed with ribose to form the ribonucleoside uridine; the corresponding deoxyribonucleoside is deoxyuridine. Symbol U.
uracil,
u·ra·cil (y r  -s l)n. A pyrimidine base that is an essential constituent of RNA. |
uracil,
uracil
U; Ura; a pyrimidine base found in nucleic acids.
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