bytownitePronunciation: /ˈbʌɪtaʊnʌɪt/Definition of bytownite noun [mass noun] a mineral present in many basic igneous rocks, consisting of a calcic plagioclase feldspar. Origin: mid 19th century: from Bytown, the former name of Ottawa, Canada, + -ite1bytownite in other Oxford dictionaries Definition of bytownite in the US English dictionary
