英语词汇“tourmaline”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	tourmaline
释义	tourmaline —tourmalinic /toor'meuh lin"ik/, adj. /toor"meuh lin, -leen'/, n. any of a group of silicate minerals of complex composition, containing boron, aluminum, etc., usually black but having various colored, transparent varieties used as gems. Also, tourmalin /toor"meuh lin/, turmaline. [1750-60; earlier tourmalin < G Turmalin, ult. < Sinhalese toramalliya carnelian; see -IN²]
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