Definition of uracil in English:

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Pronunciation: /ˈjʊərəsɪl/


[mass noun] Biochemistry
A compound found in living tissue as a constituent base of RNA. In DNA it is replaced by thymine.
Example sentences
  • Thymine, present in DNA, and uracil, present in RNA, also contribute to this band.
  • RNA has the same set of four bases, except that instead of thymine, RNA has uracil - commonly referred to as U.
  • The nitrogen-containing units are the bases: adenine, cytosine, guanine, and uracil.


Late 19th century: from ur(ea) + ac(etic) + -il.

For editors and proofreaders

Line breaks: ura¦cil

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