Definitions for uracilˈyʊər ə sɪl
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Random House Webster's College Dictionary
u•ra•cilˈyʊər ə sɪl(n.)
a pyrimidine base, C4H4N2O2, that is one of the fundamental components of RNA, in which it forms base pairs with adenine.
Category: Biochemistry
Ref: Symbol: U 5
Origin of uracil:
1905–10; ur -1+ac (etic ) +-il, of uncert. orig.
Princeton's WordNet
uracil, U(noun)
a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine
Wiktionary
uracil(Noun)
One of the bases of RNA. It pairs with adenine and is symbolised by U.
Origin: From ur- + acetic + -ile
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