Orotic acid-3-β-d-ribonucleoside; uridine-6-carboxylic acid; elevated in cases of orotidinuria. SYN: 1-ribosylorotate.
- o. 5′-monophosphate (OMP) SYN: orotidylic acid.
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orot·i·dine (ə-rotґĭ-dēn) a nucleoside, orotic acid linked by its N1 nitrogen to the C1 carbon of ribose; a phosphorylated derivative, orotidine 5′-phosphate, is an intermediate in pyrimidine nucleotide biosynthesis.Medical dictionary. 2011.