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(), n.[Gr. , , hair.] 1. (Min.) A kind of crystallite resembling a bunch of hairs, common in obsidian. See Illust. of Crystallite. 2. (Zol.) A delicate, hairlike siliceous spicule, found in certain sponges. Trichite sheaf (Zol.), one of the small sheaflike fascicles of slender set characteristic of certain sponges. See Illust. under Spicule. スポンサード リンク
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