An act of defining, delimiting, or marking boundaries; a limitation or boundary-setting.
From Latin 'delinitio,' formed from 'delimitare' (de- 'completely' + limitare 'to set limits'). Related to English 'limit' and 'delimitation,' it describes the action of drawing lines that separate things.
This is an extremely rare word, but it's related to 'delimitation'—when historians mark the 'delinition' of a historical period, they're deciding exactly where one era ends and another begins, literally drawing the line.
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