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adj.
affecting or involved in structure or construction; "the structural details of a house such as beams and joists and rafters; not ornamental elements"; "structural damage"
adj.
pertaining to geological structure; "geomorphological features of the Black Hills"; "morphological features of granite"; "structural effects of folding and faulting of the earth's surface"
adj.
characterized by or displaying affirmation or acceptance or certainty etc.; "a positive attitude"; "the reviews were all positive"; "a positive benefit"; "a positive demand"