〘 noun 〙 A group of ferns. They lived from the Devonian to the Permian periods of the Paleozoic era. The trunks reach a diameter of about one meter and a height of over 10 meters. The branches and leaves grow in whorls with bamboo-like joints, and an extant related species is the horsetail family. The raw material for coal. [English-Japanese and Japanese-English Earth Science Dictionary (1914)] Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information |
〘名〙 シダ植物の一群。古生代デボン紀から二畳紀にかけて生存した。幹の径約一メートル、高さは一〇メートル以上に及ぶ。枝や葉が輪生する竹のような節があり、現存する類縁種にトクサの仲間がある。石炭の原木。〔英和和英地学字彙(1914)〕
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