Meaning of "绽开来" in 这句话让她脸上的皱纹菊花般绽开来?
绽, 绽放, means bloom/blossom.

皱纹菊花般绽开来 means the wrinkles bloom like chrysanthemum, which is used to describe smile here.



To be honest, using 绽放 instead sounds more natural to me.