Serving to explain or make something clear; providing reasons, causes, or mechanisms that help understand a phenomenon. Focuses on answering 'why' or 'how' questions about observed events or patterns.
From Latin 'explanatorius,' from 'explanare' (to make plain), combining 'ex-' (out) + 'planus' (flat, clear). The modern sense of providing causal understanding developed during the Scientific Revolution as systematic explanation became central to knowledge.
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