衍生 yǎnshēng to give rise to
to give rise to; to derive; derivative; derivation
How to remember 衍生: 衍 to overflow + 生 life = to give rise to.
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How it is used
- To derive / give rise to secondary things - 衍生问题 (yǎnshēng wèntí) knock-on problems; 衍生产品 (yǎnshēng chǎnpǐn) derivative products; 金融衍生品 (jīnróng yǎnshēngpǐn) financial derivatives.
- Formal; stresses something arising *out of* an existing thing.
- Common in finance, chemistry, and describing spin-off works/products.