Hypertext Webster Gateway: "Pentagon"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Pentagon \Pen"ta*gon\, n. [Gr. ?; ? (see {Penta-}) + gwni`a
angle: cf. L. pentagonium, F. pentagone.] (Geom.)
A plane figure having five angles, and, consequently, five
sides; any figure having five angles.
{Regular pentagon}, a pentagon in which the angles are all
equal, and the sides all equal.
From WordNet (r) 1.7 (wn)
Pentagon
n 1: a government building with five sides that serves as the
headquarters of the United States Department of Defense
[syn: {Pentagon}]
2: the United States military establishment [syn: {Pentagon}]
3: a five-sided polygon
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