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(), n.[L. attenuatio: cf. F. attnuation.] 1. The act or process of making slender, or the state of being slender; emaciation. 2. The act of attenuating; the act of making thin or less dense, or of rarefying, as fluids or gases. 3. The process of weakening in intensity; diminution of virulence; as, the attenuation of virus. スポンサード リンク
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