Simple past tense and past participle of blossom.(verb)
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Use "blossomed" in a sentence
"For those of us who weren't there during Motown's Detroit peak, when the label blossomed into one of the world's top music factories, Thursday offered a taste of what must have been."
"“Sound, sound the clarion,” she said to herself as deadly orange petals of fire blossomed from the top floors of the Flatiron Building."
"Then a fireball blossomed from the top of the forum, both real and virtual."