a. and sb.; also ambligon. [a. Fr. amblygone, or ad. its original, med.L. ambligōni-us, ad. Gr. ἀμβλυγώνι-ος obtuse-angled, f. ἀμβλύ-ς blunt + γωνία corner, angle.]

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  † A.  adj. Obtuse-angled. Obs.

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1598.  Sylvester, Du Bartas (1621), 290. As the buildings ambligon May more receive than mansions oxigon.

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1796.  Hutton, Math. Dict. [see AMBLYGONAL]

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  B.  sb. (at first used in L. form amblygonium.) An obtuse-angled figure, esp. triangle.

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1570.  Billingsley, Euclid, I. def. 28. An ambligonium or an obtuse angled triangle.

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1623.  Cockeram, Amblygone, A flat Triangle.

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1706.  Phillips, Amblygon, a Figure that has an obtuse or blunt Angle; any plain Figure, whose Sides make an obtuse Angle one with another.

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1721.  Bailey, Amblygon, a Figure that has an obtuse Angle. [So in Ash, and mod. Dicts.]

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