sunspot
n.
also sun-spot, 1849, in astronomy, from sun, n. + spot, n.. Earlier "a spot on the skin caused by exposure to the sun" (1818).
| 词汇 | sunspot |
| 词根词缀 | Online Etymology Dictionary sunspot n. also sun-spot, 1849, in astronomy, from sun, n. + spot, n.. Earlier "a spot on the skin caused by exposure to the sun" (1818). |
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