1. containing nitrogen, especially in a lower valence state
Usage: chemistry
2. relating to or containing nitrous oxide
Usage: medical; automotive

Examples

• The dentist administered nitrous oxide to help the patient relax.
• Nitrous compounds are important in fertilizer production.
• The race car was equipped with a nitrous injection system.
• Nitrous acid is less stable than nitric acid.
• The laboratory analyzed the nitrous emissions from the factory.
• Laughing gas is another name for nitrous oxide.