uracil


ura·cil

noun \ˈyr-ə-ˌsil, -səl\

Definition of URACIL

:  a pyrimidine base C4H4N2O2 that is one of the four bases coding genetic information in the polynucleotide chain of RNA — compare adenine, cytosine, guanine, thymine

Origin of URACIL

International Scientific Vocabulary 1ur- + acetic + -il (substance relating to)
First Known Use: 1890

ura·cil

noun \ˈyr-ə-ˌsil, -səl\   (Medical Dictionary)

Medical Definition of URACIL

: a pyrimidine base C4H4N2O2 that is one of the four bases coding genetic information in the polynucleotide chain of RNA—compare adenine, cytosine, guanine, thymine

uracil

noun    (Concise Encyclopedia)

Organic compound of the pyrimidine family, often called a base, consisting of a ring containing both nitrogen and carbon atoms. It occurs in combined form in many important biological molecules, including RNA and several coenzymes active in carbohydrate metabolism. During synthesis of an RNA strand from DNA, uracil pairs with adenine. It or its corresponding nucleoside or nucleotide may be prepared from RNA by selective techniques of hydrolysis.

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