| 单词 | imaginary unit |
| 释义 | imaginary unit in American English the square root of negative one; -1 abbrev. iimaginary unit in American Englishnoun Math the complex number i Word origin [1905–10]This word is first recorded in the period 1905–10. Other words that entered Englishat around the same time include: cadre, overcall, scrounge, thiamine, white list |
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