nitrous
Nitrous (adj) means relating to or derived from nitrogen, especially in a lower-valence chemical form than "nitric" compounds. Example: “Nitrous compounds behave differently in reactions than their nitric counterparts.”
How to use nitrous
Learner’s notesIn plain EnglishRelated to nitrogen in its lower-oxidation forms; casually, short for "nitrous oxide" (laughing gas or engine-boost gas).
Don't mix up with "nitric," which refers to the higher-oxidation nitrogen compounds like nitric acid.
Fill the gap
Can you complete this real example?
_____ compounds behave differently in reactions than their nitric counterparts.
Etymology
From Middle French nitreux, tracing to Latin nitrōsus ("full of nitre").