proliferated; proliferating
Definition of proliferate
1
: to grow by rapid production of new parts, cells, buds, or offspring
2
: to increase in number as if by proliferating : multiply
1
: to cause to grow by proliferating
2
: to cause to increase in number or extent as if by proliferating
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Merriam-Webster unabridged
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Time Traveler for proliferate
The first known use of proliferate was in 1866
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