zirconPronunciation: /ˈzəːk(ə)n/Definition of zircon noun [mass noun] a mineral occurring as prismatic crystals, typically brown but sometimes in translucent forms of gem quality. It consists of zirconium silicate and is the chief ore of zirconium. Origin: late 18th century: from German Zirkon; compare with jargon2zircon in other Oxford dictionaries Definition of zircon in the US English dictionary
