Because A, G, C, and T appear in the DNA, these molecules are called DNA-bases; A, G, C, and U are called RNA-bases. Uracil and thymine are identical except that uracil lacks the 5' methyl group. Adenine and guanine belong to the double-ringed class of molecules called purines (abbreviated as R).
Definition of decalcomania. 1  1 : the art or process of transferring pictures and designs from specially prepared paper (as to glass) 2  2 : decal.
A ferendae sententiae excommunication is one that is imposed on a person by a Church authority (usually his bishop). This type of excommunication tends to be fairly rare. The more common type of excommunication is called latae sententiae. This type is also known in English as an automatic excommunication.