衍化

衍化	yǎn huà	to evolve (of ideas, designs, constructions etc) / to develop and change
衍	yǎn	to spread out / to develop / to overflow / to amplify / superfluous
化	huā	variant of 花
化	huà	to make into / to change into / -ization / to ... -ize / to transform / abbr. for 化学