Wiktionary
vb. (context idiomatic English) To blossom, to show beauty.
WordNet
v. develop or come to a promising stage; "Youth blossomed into maturity" [syn: blossom, blossom forth, unfold]
Usage examples of "blossom out".
The tenth you blossom out suddenly into something that eclipses me altogether.
I wonder if I should blossom out half as well as you have, if I tried it?
Mat snatched the starblaze blossom out of his hair and followed the officer.
Some of those shy ones blossom out, after you've paid attention to them.
Everybody had a different compass bearing for retreat-we'd blossom out in all directions, the survivors to rendezvous in a valley some forty klicks east of the base.
Now everything around him was blurring, and a glow seemed to rise, blossom out from the sunlit trees and meadows about him, join together in one golden haze and envelop him.