To give distinctive features or characteristics to something; to form or shape into specific features.
From en- plus 'feature,' which comes from Old French 'feture' and Latin 'factura' (a making, from facere to make). The prefix indicates the process of giving features.
The root 'factura' is the same one that gives us 'manufacture' (make by hand), 'manufacture,' and 'factory'—all based on the idea of making or shaping things!
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