frustum /'frʌstәm/ 📖 中文释义 n. 平截头体, 截头锥体 📘 English Definition(英文释义) n. a truncated cone or pyramid; the part that is left when a cone or pyramid is cut by a plane parallel to the base and the apical part is removed ← frustulose F 字母词表 frustum-cusp teeth →