Chlorous

Webster's Dictionary of the English Language

·adj Pertaining to, or resembling, the electro-negative character of chlorine; hence, electro-negative;

— opposed to basylous or zincous.

II. Chlorous ·adj Of, pertaining to, or derived from, chlorine;

— said of those compounds of chlorine in which this element has a valence of three, the next lower than in chloric compounds; as, chlorous acid, HClO2.