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・ amphibia
・ amphibial
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・ amphibiology
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amphibole
・ amphibolic
・ amphibological
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・ amphibrach
・ amphicarpic
・ amphicarpous
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amphibole : 英英辞書
Am"phibole
(m"fbl), n.[Gr. 'amfi°bolos doubtful, equivocal, fr. 'amfiba°llein to throw round, to doubt: cf. F. amphibole. Hay so named the genus from the great variety of color and composition assumed by the mineral.] (Min.) A common mineral embracing many varieties varying in color and in composition. It occurs in monoclinic crystals; also massive, generally with fibrous or columnar structure. The color varies from white to gray, green, brown, and black. It is a silicate of magnesium and calcium, with usually aluminium and iron. Some common varieties are tremolite, actinolite, asbestus, edenite, hornblende (the last name being also used as a general term for the whole species). Amphibole is a constituent of many crystalline rocks, as syenite, diorite, most varieties of trachyte, etc. See Hornblende.



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