Simple past tense and past participle of bloom.(verb)
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Use "bloomed" in a sentence
"The picture bloomed from a center dot and there she was on the screen, walking away, waving at me over her shoulder, her other hand holding onto the ruffled sleeve of Desi Arnaz."
"Part science project, part recycling, part fundraising, the idea bloomed more than a decade ago."
"The cocoa powder and food coloring "bloomed" in boiling hot water for about 10 mins and the baking soda was mixed with cider vinegar and added in last."