To come together and form one mass or whole; to combine or unite into a single group or organization.
From Latin 'coalescere,' from 'co-' (together) + 'alescere' (to grow up). Originally described the growing together of separate parts into one organism.
Think of coal forming from separate pieces of organic matter that coalesce under pressure. The 'coal' in coalesce reminds us that separate elements can fuse into something solid.
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