| 单词 | trachyte |
| 释义 | trachyte —trachytic /treuh kit"ik/, trachytoid /trak"i toyd', tray"ki-/, adj. /tray"kuyt, trak"uyt/, n. a fine-grained volcanic rock consisting essentially of alkali feldspar and one or more subordinate minerals, as hornblende or mica: the extrusive equivalent of syenite. [1815-25; < F < Gk trachýtes roughness, equiv. to trachý(s) rough + -tes n. suffix] |
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