熟化

熟化	shú huà	to cure / to mature
熟	shú	ripe; mature / thoroughly cooked; done / familiar; acquainted / experienced; skilled / (of sleep etc) deep; profound / also pr. [shou2]
化	huā	variant of 花
化	huà	to make into / to change into / -ization / to ... -ize / to transform / abbr. for 化学