单词 | limb |
释义 | limb 2 ![]() n. 1. Astronomy The circumferential edge of the apparent disk of a celestial body. 2. Mathematics The edge of a graduated arc or circle used in an instrument to measure angles. 3. Botany The expanded tip of a plant organ, such as a petal or corolla lobe. [Middle English limbe, graduated edge of an astronomical instrument, from Old French, from Latin limbus, border.] |
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