Explaining or describing something in detail and at length.
From Latin 'exponere' (to set forth), combining 'ex-' (out) and 'ponere' (to place). The '-ing' form shows the action in progress.
Expounding comes from the same root as 'component' and 'postpone'—all about placing things in different positions or arrangements. Medieval scholars would spend hours expounding on biblical texts, which is why universities developed around monasteries.
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