diazonium
- n the univalent cation R-N:N- (where R is an aromatic hydrocarbon); found in salts that are used in manufacturing azo dyes
diazoxide
- n vasodilator (trade name Hyperstat) used to treat severe hypertension
dibasic acid
- n an acid containing two replaceable hydrogen atoms per molecule
dibasic salt
- n a salt derived by replacing two hydrogen atoms per molecule