tourmaline
n.
complete silicate of aluminum and boron, 1759, from French or German, ultimately from Sinhalese toramalli, a general name for cornelian.
| 词汇 | tourmaline |
| 词根词缀 | Online Etymology Dictionary tourmaline n. complete silicate of aluminum and boron, 1759, from French or German, ultimately from Sinhalese toramalli, a general name for cornelian. |
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