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(), a.[From Buoy, v. t. & i.] 1. Having the quality of rising or floating in a fluid; tending to rise or float; as, iron is buoyant in mercury. "Buoyant on the flood." Pope. 2. Bearing up, as a fluid; sustaining another body by being specifically heavier. The water under me was buoyant. Dryden. 3. Light-hearted; vivacious; cheerful; as, a buoyant disposition; buoyant spirits. -- Buoy"antly, adv. スポンサード リンク
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