1.Lit. [for a plant] to develop into full bloom. The bush blossomed into beautiful red roses.Imagine this brown old bulb blossoming into a lovely flower.
2.Fig. [for someone or a concept] to develop into something. She blossomed into a lovely young lady.The idea blossomed into a huge real estate development.
Also, blossom out. Develop, flourish, as in She's blossomed into a fine young woman, or His business has blossomed out and he's doing well. [Second half of 1800s]