Prosperity
Flourishing, Thriving
noun, verbal noun
Overgrown prosperity is still prosperity. Why, it's even thriving. Nice!
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. Just watch out for the rendaku that changes しょう to じょう!
商売が繁昌するように、神社でお祈りをしてきました。
I went to pray at a Shinto shrine in order for the company to prosper.