| hexagon | <geometry> A plane figure of six angles. Regular hexagon, a hexagon in which the angles are all equal, and the sides are also all equal. Origin: L. Hexagonum, Gr. Six-cornered; six (akin to E. Six) + angle. Source: Websters Dictionary (01 Mar 1998) |
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| hexagonal | Having six sides and six angles; six-sided. Hexagonal system. <chemistry> See Crystallization. Origin: Cf. F. Hexagonal. Source: Websters Dictionary (01 Mar 1998) |