To expand or grow together with something else at the same time.
From 'co-' (together) plus 'expand,' which comes from Latin 'expandere' (to spread out or unfold). This technical term describes simultaneous growth or enlargement.
The internet and mobile technology coexpanded together in the 2000s, and neither could have conquered the world quite as fast without the other—they created a feedback loop where each made the other more powerful.
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