ad·e·nine 
(ădn-ēn′, -ĭn)
(ădn-ēn′, -ĭn)n. Abbr. A
A purine base, C5H5N5, that is the constituent involved in base pairing with thymine in DNA and with uracil in RNA.
- regimental
- regimentally
- regimentals
- regimentation
- Regina
- Reginald
- Reginald Carey
- Regiomontanus
- Regiomontanus
- region
- regional
- regional anesthesia
- regional anesthetic
- regionalism
- regionalist
- regionalistic
- regionalization
- regionalize
- regionally
- regional metamorphism
- register
- registered
- Registered Mail
- registered nurse
- registerer