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WordReference Random House Unabridged Dictionary of American English © 2024gold′en sec′tion, Fine Arts, Math.- Mathematics, Fine Arta ratio between two portions of a line, or the two dimensions of a plane figure, in which the lesser of the two is to the greater as the greater is to the sum of both: a ratio of approximately 0.618 to 1.000. Also called golden mean.
Collins Concise English Dictionary © HarperCollins Publishers:: golden section, golden mean n - the proportion of the two divisions of a straight line or the two dimensions of a plane figure such that the smaller is to the larger as the larger is to the sum of the two. If the sides of a rectangle are in this proportion and a square is constructed internally on the shorter side, the rectangle that remains will also have sides in the same proportion
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