To fix or mark the boundaries or limits of something; to determine exactly where something ends and something else begins.
From Medieval Latin delimitare (de- + limitare, from limes meaning boundary). Though similar to 'delimit,' this form emphasizes the act of drawing or fixing boundaries. Rare in modern English, mostly superseded by 'delimit.'
Delimitate and delimit mean nearly the same thing, but delimitate sounds more formal and old-fashioned—if 'delimit' is modern business jargon, 'delimitate' is what your great-grandfather's contract would have said.
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