| 单词 | deltoid |
| 释义 | deltoid [`del´tȯid] ANATOMY The large triangular shoulder muscle; originates on the pectoral girdle and inserts on the humerus. BIOLOGY Triangular in shape. MATHEMATICS The plane curve traced by a point on a circle while the circle rolls along the inside of another circle whose radius is three times as great. Also known as Steiner's hypocycloidtricuspid. |
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