u·ra·cil 
(yrə-sĭl)
(yrə-sĭl)n. Abbr. U
A pyrimidine base, C4H4N2O2, that is an essential constituent of RNA.
[UR(EA) + AC(ETIC) + -il, substance relating to.]
- pentastome
- pentastomid
- Pentateuch
- Pentateuchal
- pentathlete
- pentathlon
- pentatonic
- pentavalent
- pentazocine
- Pentecost
- Pentecostal
- Pentecostalism
- Pentecostalist
- Pentelicon
- Pentelikon
- penthouse
- pentimento
- Pentland Firth
- pentlandite
- pentobarbital sodium
- pentobarbitone
- pentosan
- pentose
- pentoxide
- pentoxifylline