Past tense of coalesce; came together to form a single unit or group.
From Latin 'coalescere' ('co-' meaning together + 'alescere' meaning to grow), entering English in the 17th century to describe things merging into one.
When different political parties coalesced into a unified government, or when separate water droplets coalesced into a puddle, you're watching the Latin roots literally act out their meaning—things growing together.
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