diazepam
- n a tranquilizer (trade name Valium) used to relieve anxiety and relax muscles; acts by enhancing the inhibitory actions of the neurotransmitter GABA; can also be used as an anticonvulsant drug in cases of nerve agent poisoning
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