A clear, detailed description or drawing that shows the exact shape, outline, or boundaries of something.
From 'delineate' plus the suffix '-tion' (or '-ation'), which converts the verb into a noun. This follows the standard Latin pattern of creating abstract nouns from action words.
The Declaration of Independence is famous for its 'delineation' of human rights—the founders weren't just listing things, they were carefully drawing the boundaries of freedom in language, which is what delineation means at its heart.
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