Added 10 October 2026 monochloride noun Categories: Obscure Words noun ! Definition from Wiktionary (CC BY-SA). More about monochloride at Wordnik → Where our words come from → Any chloride containing a single chlorine atom in each molecule. Related Words: iodinemonochloriddichloridemonochlorinationpolychloridemonohydrochloridemonochromatetrichloridemonochalcogenidemonochloroalkanepentachlorideoctachloride Back to today's word