ムラサキイガイむらさきいがいMeanings1nounMediterranean musselusually written using kana aloneScientific/common name for Mytilus galloprovincialis, a widely cultivated and invasive mussel species. In everyday contexts, often simply called ムール貝.ムラサキイガイは世せ界かい中じゅうの沿えん岸がんで見みられる。